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give 7 examples of inertia of rest with explanation
How to find the least count of a spring balance?
give examples of inertia of direction with explanation
1 .A car of mass 1000kg and a bus of mass 8000kg are moving with the same velocity of 36
how many types of inertia are there name them
a car with a dead battery is to be pushed along a straight road to give it a speed of 1m/s which is sufficient to start an engine? if one or two persons give a sudden push(unbalanced force) to it ,it hardly starts.but a continious push over some time can start the engine?why?
define one newton force
what is the formula of recoil velocity of a gun?????????
explain why a cricketer moves his hands backwards while catching a fast moving cricket ball.
please explain newton's third law of motion!
if a man jumps out from a boat , the boat moves backwards . why?
Derive the equation for the conservation of momentum
1) The minute hand of a clock is 7 cm long. Calculate the distance covered and the displacement of minute hand of the clock from 9.00 AM to 9.30 AM.
2) An athlete completes a round of a circular track of diameter 200 m in 20s. Calculate the distance travelled by the athlete.
3)A boy is running on a straight road. He runs 500 m towards north in 2 minutes 10 seconds and then turns back and runs 200 m in 1 minute. Calculate his average speed and magnitude of average velocity during the whole journey.
4) Akshil drove his car with speed of 20 km/h while going to his college. When he returned to his home along the same route , the speed of the car is 30 km/h. Calculate the average speed of the car during the entire journey.
name and define three different types of inertia and give an example each
Define force and write its si. Unit
From a rifle of mass 4kg, a bullet of mass 50g is fired with an initial velocity of 35 ms-1. Calculate the initial recoil velocity of the rifle.
The bullet of mass 10g moving with a velocity of 400m/s gets embeded in a freely suspended wooden block of mass700g .what is the velocity aquired by a block
examples of newton's second law of motion
a boy weighing 30 kg is riding a bicycle weighing 50 kg . if the bicycle is moving at a speed of 9 km/h towards the west , find the linear momentum of the bicycle-boy system in SI units "
why are road accidents at high speed are very much worse than accidents at low speed???
A body of mass 5 Kg is moving with a velocity of 10 m/s. A force is applied on it so that in 25 s , it attains a velocity of 35 m/s. calculate the value of the force applied.
why did needles should have pointed tips
ALL THE FORMULAS IN THIS CHAPTER FORCE AND LAWS OF MOTION CAN ANY ONE SAY ME ASAP
on what factors does inertia of a body depend?
a rubber ball of mass 50 g falls from a height of 10 cm and rebounds to a height of 50 cm. determine the change in linear momentum and average force between the ball and the ground , taking time of contact as 0.1 s
Place a water - filled tumbler on tray. Hold the tray and turn around as fast as u can. Why does water not spill?
What is the real definition of Second Law Of Motion
how does a karate player breaks a slab of ice with a single blow?
Give two examples each when-1) Force changes the speed of a moving body2) Force stops a moving body3) Force changes the direction of motion of a body4) Forces changes the shape and size of a body
An object of mass 2 kg is sliding with a constant velocity of 4 m s–1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
(a) 32 N (b) 0 N (c) 2 (d) 8 N
Why does the speed of an object change with time?
a truck starts from rest and rolls down a hill with a constant acceleration .it travels a distance of 400m in 20s . find the acceleration . find the force acting on it if its mass is 7 metric tonne (1 metric tonne = 1000kg).
A Bead Of Mass m is attached to one end of a spring of natural length R And spring constant
K = (√3+1)mg/R . other end of the spring is attached toa point A ON the vertical ring of radius R MAKING AN ANGLE OF 30 DEGREE WITH ITS CIRCUMFERENCE THE NORMAL REACTION AT THE BEAD WHEN THE SPRING IS ALLOWED TO MOVE FROM POINT A
a train is moving with acceleration along a straight line with respect to ground aperson in train finds that-
A.newtond law2 is false and 3law is true
B.newtons 3 law is false but newtons 2law is true
C.all laws r false
D.all laws are true
a stone of 1kg is thrown with a velocity of 20m/s. across a frozen surface of a lake and comes to rest after travelling a distance of 50m. what is the force of friction between the stone and the ice.
Write the three equations for the uniformly accelerated motion.Also derived the second and the third equation by graphical method.
a hunter has a machine gun that can fire 50 g bullets with a velocity of 150 m/s . a 60 kg tiger springs at him with a velocity of 10 m/s . how many bullets must the hunter fire per second into the tiger in order to stop him in his track
Why shockers are provided in automobile vehicles?
A ball of mass 100 g and another ball 120 g moves towards each other with speed 6 m/s and 5 m/s respectively. if they stick to each other after colliding , what would be the velocity of the combined mass after collision?
a bullet of mass 20g is horizontally fired with a velocity of 150m/s frm a pistol of mass 2kg. What is the recoil velocity of the pistol?
Find the initial velocity of the car which is stopped in 10 sec by applying brakes .The retardation due to brakes is 2.5m/sec sq.....
Define: INERTIA
a pile of one rupee coins remains intact when the lowest point in the pile is struck quickly by a knife. give reason
A bullet fired from a gun makes a clean whole in a window whereas a stone pebble thrown brakes the whole window.why?
Why are vehicles fitted with shockers?
How much momentum will a dumbbell of mass 10 Kg transfer to the floor if it falls from a height of 80 cm? Take its downwards acceleration to be 10 m/s2?
can someone plz tell me the derivations of equations of motions without graph ..
why chinaware is wrapped in straw while transportation?
please give the correct ans from the 4 options
balanced forces ____________ a body
a) move b) accelerate c) retard d) deform
a bullet of mass 10 g is fired from a rifle with a velocity of 800 m/s . after passing through a mud wall 180cm thick, the velocity drops to 100m/s. calculate the average resistance of the wall.
A ship whose mass is 5x175kg is initially at rest is pulled by a force of 15x140N through a distance of 10m. If the resistance due to water is negligible then what is the speed of the ship ?
A gunman gets a jerk on firing a bullet.why??
EXPLAIN THE EXAMPLE OF SECOND LAW OF MOTION - USE OF SEAT BELT IN CAR
action and reaction forces do not balance each other. why?
Few examples of balanced and unbalanced force?
why is it difficult to balance our body when we accidentally step on a peel of banana give reasons
A body is moving with uniform acceleration. Is its momentum constant?Explain.
An object of mass 1 kg travelling in a straight line with a velocity of 10 m s−1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.
An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s−1 to 8 m s−1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.
A body at rest opposes the forces which try to move it .Name the propertycalled.and giveits one example?
how a karate player can break a pile of tiles with a single blow of his hand
if you shake the branches of tree,the fruits fall down. why?
"WHEN A HEAVY BODY COLLIDES WITH A LIGHT BODY WHICH ONE EXPERIENCE A GREATER FORCE"
A ball of mass 400g dropped from a height of 5m. A boy on the ground hits the ball vertically upwards with a bat with an force of 100N so that it attains a vertically height of 20m. The time for which the ball remains in contact with the bat? (g = 10m/s2)
When a carpet is beaten with a stick dust comes out. why?
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Syllabus
give 7 examples of inertia of rest with explanation
How to find the least count of a spring balance?
give examples of inertia of direction with explanation
1 .A car of mass 1000kg and a bus of mass 8000kg are moving with the same velocity of 36
how many types of inertia are there name them
a car with a dead battery is to be pushed along a straight road to give it a speed of 1m/s which is sufficient to start an engine? if one or two persons give a sudden push(unbalanced force) to it ,it hardly starts.but a continious push over some time can start the engine?why?
define one newton force
a) a force can stop a lighter vehicle as well as a heavier vehicle which are moving
b) a force can accelerate a lighter vehicle more easily than a heavier vehicle that is moving
c) a force exerted by a lighter vehicle on collision with a heavier vehicle results in both the vehicles coming to a halt
d) force exerted by the escaping air from a balloon in the downward direction makes the balloon to go upwards
TO BE ANSWERED FAST THANK YOU
what is the formula of recoil velocity of a gun?????????
explain why a cricketer moves his hands backwards while catching a fast moving cricket ball.
please explain newton's third law of motion!
if a man jumps out from a boat , the boat moves backwards . why?
Derive the equation for the conservation of momentum
1) The minute hand of a clock is 7 cm long. Calculate the distance covered and the displacement of minute hand of the clock from 9.00 AM to 9.30 AM.
2) An athlete completes a round of a circular track of diameter 200 m in 20s. Calculate the distance travelled by the athlete.
3)A boy is running on a straight road. He runs 500 m towards north in 2 minutes 10 seconds and then turns back and runs 200 m in 1 minute. Calculate his average speed and magnitude of average velocity during the whole journey.
4) Akshil drove his car with speed of 20 km/h while going to his college. When he returned to his home along the same route , the speed of the car is 30 km/h. Calculate the average speed of the car during the entire journey.
A frictionless wagon going at 2.5 meters per second is pushed with a force of 380 N, and its speed increases to 6.2 meters per second in 4.0 seconds. What is its mass -
(a) 410 kg (b) 420 kg
(c) 480 kg (d) 310 kg
name and define three different types of inertia and give an example each
Define force and write its si. Unit
i)Which direction does the balloon move when the thread tied to its neck is removed and why? ii)State the conclusion drawn from this activity.
From a rifle of mass 4kg, a bullet of mass 50g is fired with an initial velocity of 35 ms-1. Calculate the initial recoil velocity of the rifle.
The bullet of mass 10g moving with a velocity of 400m/s gets embeded in a freely suspended wooden block of mass700g .what is the velocity aquired by a block
examples of newton's second law of motion
a boy weighing 30 kg is riding a bicycle weighing 50 kg . if the bicycle is moving at a speed of 9 km/h towards the west , find the linear momentum of the bicycle-boy system in SI units "
why are road accidents at high speed are very much worse than accidents at low speed???
1)why engine's mass is not considered to calculate the acceleration of the train
A body of mass 5 Kg is moving with a velocity of 10 m/s. A force is applied on it so that in 25 s , it attains a velocity of 35 m/s. calculate the value of the force applied.
why did needles should have pointed tips
ALL THE FORMULAS IN THIS CHAPTER FORCE AND LAWS OF MOTION CAN ANY ONE SAY ME ASAP
on what factors does inertia of a body depend?
(a) 6000 N (b) 5600 N (c) 4500 N (d) 4000 N
a rubber ball of mass 50 g falls from a height of 10 cm and rebounds to a height of 50 cm. determine the change in linear momentum and average force between the ball and the ground , taking time of contact as 0.1 s
Place a water - filled tumbler on tray. Hold the tray and turn around as fast as u can. Why does water not spill?
What is the real definition of Second Law Of Motion
A) Momentum is not conserved when the rubber ball hits the floor.
B) Momentum is not conserved when the metallic ball hits the floor.
C) The rubber ball hits the floor with greater velocity.
D) There is greater change in momentum to the ball in case of the rubber ball.
how does a karate player breaks a slab of ice with a single blow?
Give two examples each when-
1) Force changes the speed of a moving body
2) Force stops a moving body
3) Force changes the direction of motion of a body
4) Forces changes the shape and size of a body
An object of mass 2 kg is sliding with a constant velocity of 4 m s–1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
(a) 32 N (b) 0 N (c) 2 (d) 8 N
Why does the speed of an object change with time?
a truck starts from rest and rolls down a hill with a constant acceleration .it travels a distance of 400m in 20s . find the acceleration . find the force acting on it if its mass is 7 metric tonne (1 metric tonne = 1000kg).
A. Doubles
B.increases by factor of four
C.stays same.
D.is cut in half.
A Bead Of Mass m is attached to one end of a spring of natural length R And spring constant
K = (√3+1)mg/R . other end of the spring is attached toa point A ON the vertical ring of radius R MAKING AN ANGLE OF 30 DEGREE WITH ITS CIRCUMFERENCE THE NORMAL REACTION AT THE BEAD WHEN THE SPRING IS ALLOWED TO MOVE FROM POINT A
a train is moving with acceleration along a straight line with respect to ground aperson in train finds that-
A.newtond law2 is false and 3law is true
B.newtons 3 law is false but newtons 2law is true
C.all laws r false
D.all laws are true
a stone of 1kg is thrown with a velocity of 20m/s. across a frozen surface of a lake and comes to rest after travelling a distance of 50m. what is the force of friction between the stone and the ice.
Write the three equations for the uniformly accelerated motion.Also derived the second and the third equation by graphical method.
a hunter has a machine gun that can fire 50 g bullets with a velocity of 150 m/s . a 60 kg tiger springs at him with a velocity of 10 m/s . how many bullets must the hunter fire per second into the tiger in order to stop him in his track
Why shockers are provided in automobile vehicles?
A ball of mass 100 g and another ball 120 g moves towards each other with speed 6 m/s and 5 m/s respectively. if they stick to each other after colliding , what would be the velocity of the combined mass after collision?
a bullet of mass 20g is horizontally fired with a velocity of 150m/s frm a pistol of mass 2kg. What is the recoil velocity of the pistol?
Find the initial velocity of the car which is stopped in 10 sec by applying brakes .The retardation due to brakes is 2.5m/sec sq.....
Define: INERTIA
a pile of one rupee coins remains intact when the lowest point in the pile is struck quickly by a knife. give reason
A bullet fired from a gun makes a clean whole in a window whereas a stone pebble thrown brakes the whole window.why?
Why are vehicles fitted with shockers?
How much momentum will a dumbbell of mass 10 Kg transfer to the floor if it falls from a height of 80 cm? Take its downwards acceleration to be 10 m/s2?
can someone plz tell me the derivations of equations of motions without graph ..
why chinaware is wrapped in straw while transportation?
please give the correct ans from the 4 options
balanced forces ____________ a body
a) move b) accelerate c) retard d) deform
a bullet of mass 10 g is fired from a rifle with a velocity of 800 m/s . after passing through a mud wall 180cm thick, the velocity drops to 100m/s. calculate the average resistance of the wall.
A ship whose mass is 5x175kg is initially at rest is pulled by a force of 15x140N through a distance of 10m. If the resistance due to water is negligible then what is the speed of the ship ?
A gunman gets a jerk on firing a bullet.why??
EXPLAIN THE EXAMPLE OF SECOND LAW OF MOTION - USE OF SEAT BELT IN CAR
action and reaction forces do not balance each other. why?
Few examples of balanced and unbalanced force?
why is it difficult to balance our body when we accidentally step on a peel of banana give reasons
A body is moving with uniform acceleration. Is its momentum constant?Explain.
An object of mass 1 kg travelling in a straight line with a velocity of 10 m s−1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.
An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s−1 to 8 m
s−1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.
A body at rest opposes the forces which try to move it .Name the propertycalled.and giveits one example?
how a karate player can break a pile of tiles with a single blow of his hand
if you shake the branches of tree,the fruits fall down. why?
"WHEN A HEAVY BODY COLLIDES WITH A LIGHT BODY WHICH ONE EXPERIENCE A GREATER FORCE"
A ball of mass 400g dropped from a height of 5m. A boy on the ground hits the ball vertically upwards with a bat with an force of 100N so that it attains a vertically height of 20m. The time for which the ball remains in contact with the bat? (g = 10m/s2)
a) an acceleration of 2.5 m/s2 in a body of 4 kg
b)an acceleration of 3.0 m/s2 in a body of 10 kg
When a carpet is beaten with a stick dust comes out. why?