Subject: Physics, asked on 24/5/18

## an aeroplane is flying with a uniform speed of 100km/h around the circumference of a circle .what will be the change in velocity in (1/4)th of the round? how much in (1/2) round( ans is 140km/hr and 200km/hr)

Subject: Physics, asked on 23/5/18

## A rocket is fired vertically from the ground with a vertical acccerleration of 10m/s.The fuel is finished in 1min and it continues to move up.What is the maximum height reached

Subject: Physics, asked on 22/5/18

## Please give me the mathematical proof of the three equations of motion.

Subject: Physics, asked on 22/5/18

## how to calculate velocity from position-time graph::: we have to calculate the length of slope or anything other...?

Subject: Physics, asked on 22/5/18

## how to integrate this ... plz solve by explaining each little step...? Q). $S={\int }_{0}^{5}\left(3{t}^{2}\right)dt$

Subject: Physics, asked on 20/5/18

## Q. Given below is a v-t graph. Draw a corresponding a-t graph and explain the motion of the body through the graph

Subject: Physics, asked on 19/5/18

## multiple options are correct Q.112. The forces each numerically equal to 5 N, are acting as shown in the figure. (A) The magnitude of resultant force is 5$\sqrt{3}$ N (B) The magnitude of resultant force is 5 N (C) The resultant vector is at 30$°$ with + ve x axis (D) The resultant vector is at 120$°$ with + ve x axis

Subject: Physics, asked on 19/5/18

## A stone is dropped into a well and the sound of splash is heard after 5.33 seconds. if the water is at the depth of 122.5 m from the ground . the velocity of sound in air is

Subject: Physics, asked on 19/5/18

## From the top of a tower 36 m high, a body is dropped and at the same time another body is projected vertically upwards from the ground . if they meet mid-way , find the initial velocity of the projected body and its velocity when two bodies come together.

Subject: Physics, asked on 19/5/18

## Solve this: Q.10. The velocity of a moving point v = $\left(2t+8{t}^{-2}\right)$ m/s. Find the path covered by the point during the ${2}^{nd}$ second.

Subject: Physics, asked on 19/5/18

## Solve this: Q.9. A point moves with velocity v = $\left(9{t}^{2}-8t\right)$ m/ s. Find the path covered by the point during the fourth second.

Subject: Physics, asked on 19/5/18

## Solve this: 30. The acceleration of a particle moving along x axis varies as a = 2t - 3 m/ s2 where t is in seconds. If velocity at t = 1s is 2 m /s then the velocity at t = 3s is (A) 6 m/s                (B) 8 m/s                (C) 10 m/s                (D) 4 m/s

Subject: Physics, asked on 19/5/18

## If $\stackrel{\to }{P}=\stackrel{\to }{Q}$ then which of the following is NOT correct (A) $\stackrel{^}{P}=\stackrel{^}{Q}$          (B) $\left|\stackrel{\to }{P}\right|=\left|\stackrel{\to }{Q}\right|$              (C) $P\stackrel{^}{Q}=Q\stackrel{^}{P}$               (D) $\stackrel{\to }{P}+\stackrel{\to }{Q}=\stackrel{^}{P}+\stackrel{^}{Q}$

Subject: Physics, asked on 19/5/18

## Solve this: Q.7. If the sum of two unit vectors is a unit vector, then magnitude of difference is (A) $\sqrt{2}$ (B) $\sqrt{3}$ (C) $\frac{1}{\sqrt{2}}$ (D) $\sqrt{5}$

Subject: Physics, asked on 18/5/18

## Why is path length a scalar quantity?? By the help of the co-ordinate system we can easily say what the direction of magnitude is. Since the direction can be known with the +or- sign then it should be a vector quantity. Pls explain.

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