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5/32 MCQs for:

Linear Momentum

A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the change in the momentum of the ball?

72 kgm/s.

1.2 kgm/s

5.4kgm/s.

0.60 kgm/s.

A 3.0-kg object moves to the right at 4.0 m/s. It collides in a perfectly inelastic collision with a 6.0 kg object moving to the left at 2.0 m/s. What is the total kinetic energy after the collision?

0 J.

24 J.

36 J

72 J.

The area under the curve on a Force versus time (F vs. t) graph represents:

Momentum.

Impulse.

Work.

Kinetic energy.

A soldier who fires a bullet from a gun has the tendency to move backwards as the bullet flies forward.

This observation can be explained by:

Conservation of mechanical energy.

Newton’s first law of motion.

Conservation of linear momentum.

Newton’s second law.

Two objects collide and stick together. Kinetic energy:

Is definitely not conserved.

Is conserved only if the environment is frictionless.

Is conserved only if the collision is elastic.

Is definitely conserved.