Category: Motion and Force

A. solid and soft
B. soft and elastic
C. solid and hard
D. hard and elastic

A. its velocity
B. its acceleration
C. its position vector
D. its momentum

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

A. speed changes
B. acceleration changes
C. direction of motion changes
D. displacement from origin changes

A. tan-1 ¼
B. tan-1 4
C. tan-1 ½
D. tan-1 2

A. rest
B. motion
C. velocity
D. force

A. force, displacement
B. force, velocity
C. force, acceleration
D. force, momentum

A. Constant
B. not constant
C. constant if the rate of ejected gases is constant
D. constant for short range rocket.

A. straight inclined line.
B. parabola
C. inclined curve
D. declined curve

A. acceleration
B. distance
C. force
D. momentum