Momentum

Direction of momentum is direction of object’s 

A. mass 

B. acceleration 

C. velocity 

D. frictional force

In a perfectly elastic collision, momentum and energy are 

A. not conserved 

B. conserved 

C. becomes zero after collision 

D. equal before collision

Interaction that causes an object’s momentum to change is 

A. velocity 

B. acceleration 

C. power 

D. force 

In a perfectly elastic collision, the relative speed of approach and relative speed of separation are 

A. equal 

B. in equal 

C. zero 

D. infinite

Momentum of two objects moving with same speed but in opposite direction upon collision is 

A. increased 

B. decreased 

C. is zero 

D. is infinite

A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s -1 collides with stationary red ball of same mass, they move forward making angle of 90° between their paths. Their speed is 

A. 1 m s^-1 

B. 0.354 m s^-1 

C. 2 m s^-1 

D. 3 m s^-1

In fireworks the momentum provided by chemicals is directed 

A. upwards 

B. left side 

C. right side 

D. downwards

In a springy collision, if the fast moving trolley collides with a slow one, then the fast one will bounce back at speed of 

A. slow one 

B. less than slow one 

C. more than slow one 

D. with the same speed as before

What is the momentum

An object travelling with constant velocity has 

A. constant momentum 

B. zero momentum 

C. increasing momentum 

D. decreasing momentum