4. Physical Principles
Momentum — Quiz
Test your understanding of momentum with 5 practice questions.
Practice Questions
Question 1
A $0.2 \text{ kg}$ ball moving at $10 \text{ m/s}$ strikes a wall and bounces back with a velocity of $8 \text{ m/s}$. What is the change in momentum of the ball?
Question 2
Which of the following best explains why a follow-through in sports (e.g., hitting a baseball) increases the speed of the ball?
Question 3
A $5 \text{ kg}$ object moving at $6 \text{ m/s}$ collides with a $10 \text{ kg}$ object moving at $3 \text{ m/s}$ in the same direction. If they stick together after the collision, what is their common final velocity?
Question 4
In a perfectly inelastic collision, which of the following quantities is NOT conserved?
Question 5
A $0.05 \text{ kg}$ bullet is fired from a $2 \text{ kg}$ rifle. If the bullet leaves the rifle with a velocity of $300 \text{ m/s}$, what is the recoil velocity of the rifle?