## When two bodies move toward each other with constant speeds the…

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# Motion and Force

## The thrust on the rocket in the absence of gravitational force of attraction is__________________?

The thrust on the rocket in the absence of gravitational force of attraction is__________________? A. Constant B. not constant C. constant if the rate of ejected gases is constant D. constant for short range rocket.…

## Which of the following is not an example of projectile motion ?

Which of the following is not an example of projectile motion ? A. a gas filled ballon B. bullet fired from gun C. a football kicked D. a base ball shot

## The acceleration in the rocket at any instant is proportional to the nth power of the velocity of…

The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ? A. -1B. 1 C. 2 D. -2

## When collision between the bodies in a system is inelastic in nature then for system…

When collision between the bodies in a system is inelastic in nature then for system ____________________? A. momentum changes but K.E remain conserveB. K.E changes but momentum remain conserve C. both momentum and K.E changes D.…

## A body is falling freely under gravity. How much distance it falls during an interval of time…

A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ? A. 14 m B. 20 m C. 5 m D. 25 m

## During long jump, athlete runs before taking the jump. By doing so he__________________?

During long jump, athlete runs before taking the jump. By doing so he__________________? A. provide him a larger inertia B. decreases his inertia C. decreases his momentumD. increases his momentum…

## Motorcycle safety helmet extends the time of collision hence decreasing the________________?

Motorcycle safety helmet extends the time of collision hence decreasing the________________? A. chance of collision B. force acting C. velocityD. impulse

## When a body moves in a straight line then its displacement coincides with__________________?

When a body moves in a straight line then its displacement coincides with__________________? A. distance B. force C. acceleration is zero D. both A and B

## Momentum depends upon__________________?

Momentum depends upon__________________? A. force acts on the body B. mass of the body C. velocity of the bodyD. both mass and velocity of the body

## 2nd law of motion gives the definition of________________?

2nd law of motion gives the definition of________________? A. forceB. acceleration C. velocity D. both force and acceleration