4. Momentum and Collisions
Conservation Of Momentum — Quiz
Test your understanding of conservation of momentum with 5 practice questions.
Practice Questions
Question 1
A stationary $4 \text{ kg}$ object explodes into two pieces. If one piece of mass $1 \text{ kg}$ moves with a velocity of $6 \text{ m/s}$ to the east, what is the velocity of the second piece?
Question 2
In an inelastic collision between two objects, which of the following quantities is NOT conserved?
Question 3
A $0.05 \text{ kg}$ bullet is fired into a stationary $2 \text{ kg}$ wooden block. If the bullet embeds itself in the block and the block-bullet system moves at $1.2 \text{ m/s}$ immediately after impact, what was the initial velocity of the bullet?
Question 4
Two billiard balls of equal mass collide head-on. If the first ball is moving at $3 \text{ m/s}$ and the second ball is initially at rest, what are their velocities after a perfectly elastic collision?
Question 5
A $60 \text{ kg}$ astronaut is floating in space and pushes off a $10 \text{ kg}$ tool box with a force that gives the tool box a velocity of $2 \text{ m/s}$ away from the astronaut. What is the recoil velocity of the astronaut?