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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

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

how many types of inertia are there name them

define one newton force

what is the formula of recoil velocity of a gun?????????

2) What can you say about the speed of a moving object if no force is acting on to it.?

3) Two forces of 5N &22N are acting in a body in the same direction what will be the

resultant force& in which direction will it act?

If the two forces in the above example would have been acting in the opposite direction

What would be the resultant force& in which direction will it act?

4) If we push the box with a small force, the box does not move, why?

5) What should be the force acting on an object moving with uniform velocity?

explain why a cricketer moves his hands backwards while catching a fast moving cricket ball.

please explain newton's third law of motion!

1 .A car of mass 1000kg and a bus of mass 8000kg are moving with the same velocity of 36

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 horizontal force equal to the weight of a bodymoves it from rest ,wat is the acceleration produced in it?

name and define three different types of inertia and give an example each

why a moving ship takes longer time as compared to a car when equal breaks are appiled

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

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 "

examples of newton's second law of motion

why are road accidents at high speed are very much worse than accidents at low speed???

Why does the speed of an object change with time?

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.

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

(A) 2 mA

(B) 3.6 mA

(C) 5 mA

(D) 1.25 mA

What is the real definition of Second Law Of Motion

^{2}).how does a karate player breaks a slab of ice with a single blow?

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.

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

a 40 kg skater moving at 4ms eastwards collides head on with a 60 kg skater travelling at 3ms westwards . if the two skates remain in contact, what is their final velocity?

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).

Explain recoiling of gun with

third law of motion?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

plsssss reply fast! !!

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.

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 does one get hurt seriously while jumping on a hard floor ? plz help

Why shockers are provided in automobile vehicles?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 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 bullet fired from a gun makes a clean whole in a window whereas a stone pebble thrown brakes the whole window.why?

Do all motions requires a cause?

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?

A gardener waters the plants by a pipe of diameter 1 mm. The water comes out from the pipe atthe rate of 10 cm

^{3}/sec. The reactionary force exerted on the hand of the gardener is?can someone plz tell me the derivations of equations of motions without graph ..

what is the difference between magnitude and direction

why chinaware is wrapped in straw while transportation?

A. Doubles

B.increases by factor of four

C.stays same.

D.is cut in half.

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.

range of the spring balanceA gunman gets a jerk on firing a bullet.why??

action and reaction forces do not balance each other. why?

Place a water - filled tumbler on tray. Hold the tray and turn around as fast as u can. Why does water not spill?

Few examples of balanced and unbalanced force?

Q- two carts A and B of mass 10 kg each are placed on a horizontal track. They are joined tightly by a light but strong rope C . a man holds the cart A and pulls it towards the right with a force of 70N. The total force of friction by the track and the air on each cart is 15N,acting toward the left. Find:-

(a) the acceleration of the cart

(b) the force exerted by the rope on the car B

why is it difficult to balance our body when we accidentally step on a peel of banana give reasons

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.1)why engine's mass is not considered to calculate the acceleration of the train

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s

^{−1}to 8 ms

^{−1}in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.how a karate player can break a pile of tiles with a single blow of his hand

Q). If three coplanar forces acting at origin are in equilibrium then which is correct :

if you shake the branches of tree,the fruits fall down. why?

Define inertia. On what factor does it depend? what are the different kinds of inertia? give one example of each.

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/s

^{2})Show that Newton's first law of motion is contained in second law ?

^{2})].When a carpet is beaten with a stick dust comes out. why?