Momentum

Interaction that causes an object’s momentum to change is 

A. velocity 

B. acceleration 

C. power 

D. force 

If a trolley collides with a stationary trolley of double mass, then they move off with 

A. half of the original velocity 

B. one third of original velocity 

C. double the original velocity 

D. triple the original velocity

Total momentum within a closed system is 

A. increasing 

B. decreasing 

C. zero 

D. constant

Momentum of electron having mass 9.1 × 10^-31 kg and velocity 2.0 × 10⁷ is 

A. 1.91 × 10^-23 

B. 2.34 × 10^-23 

C. 3.11 × 10^-19 

D. 7.88 × 10^-34

Momentum possessed by spinning objects is called 

A. linear momentum 

B. angular momentum 

C. normal momentum 

D. degrees’ momentum

In a perfectly elastic collision, momentum and energy are 

A. not conserved 

B. conserved 

C. becomes zero after collision 

D. equal before collision

If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is 

A. elastic 

B. inelastic 

C. conserved 

D. not conserved

What is the momentum

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

Speed of Earth when a rock of mass 60 kg falling towards Earth with speed of 20 m s^-1 is 

A. 2.4 × 10^-22 m s^-1 

B. 3.5 × 10^-33 m s^-1 

C. −2.0 × 10^-22 m s^-1 

D. −3 × 10³⁴ m s^-1