## The range of the projectile at 30 deg and 60 deg are__________________?

The range of the projectile at 30 deg and 60 deg are__________________?

A. equal to 45 deg
B. equal to 90 deg
C. equal to each other
D. none of the above

## The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?

The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?

A. 1 N
B. 10 N
C. 100 N
D. none

## The trajectory (or path) of a projectile is_________________?

The trajectory (or path) of a projectile is_________________?

A. straight line
B. parabola
C. hyperbola
D. circle

## The distance covered by a body in time t starting from rest is__________________?

The distance covered by a body in time t starting from rest is__________________?

A. at2/2
B. Vt
C. a2t/2
D. at2

## When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?

When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?

A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s

## 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 expelled gases. Where the value of n must be ?

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. -1
B. 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 conserve
B. K.E changes but momentum remain conserve
C. both momentum and K.E changes
D. both momentum and K.E remain conserve

## 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 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