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5/32 MCQs for:

Linear Momentum

In an inelastic collision, if the momentum is conserved, then which of the following statements is true about kinetic energy?

None is correct.

Kinetic energy is also conserved.

Kinetic energy is lost.

Kinetic energy is gained.

Two identical 1500-kg cars are moving perpendicular to each other. One moves with a speed of 25 m/s due north and the other moves at 15 m/s due east. What is the total momentum of the system?

6.0 x 104 kgm/s at 310 N of E.

6.0 x 104 kgm/s at 590 N of E.

4.4 x104 kgm/s at 590 N of E.

4.4 x 104 kgm/s at 310 N of E.

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

Momentum.

Impulse.

Kinetic energy.

Work.

In an elastic collision, if the momentum is conserved, then which of the following statements is true about kinetic energy?

None is correct.

Kinetic energy is gained.

Kinetic energy is also conserved.

Kinetic energy is lost.

A 0.060-kg tennis ball, initially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of the ball?

1.8 kgm/s.

1.1 kgm/s.

0.36 kgm/s.

0.72 kgm/s.