1. How does the velocity of the two carts combined compare to the initial velocity when the carts have equal mass?

The velocity after the collision is one half of the initial velocity.

The velocity after the collision is more than one half of the initial velocity.

The velocity after the collision is less than one half of the initial velocity.

The velocity after the collision is the same as the initial velocity.

2. How does the velocity of the two carts combined compare to the initial velocity when the blue cart has agreater mass than the red cart?

The velocity after the collision is one half of the initial velocity.

The velocity after the collision is more than one half of the initial velocity.

The velocity after the collision is less than one half of the initial velocity.

The velocity after the collision is the same as the initial velocity.

3. How does the velocity of the two carts combined compare to the initial velocity when the blue cart has asmaller mass than the red cart?

The velocity after the collision is one half of the initial velocity.

The velocity after the collision is more than one half of the initial velocity.

The velocity after the collision is less than one half of the initial velocity.

The velocity after the collision is the same as the initial velocity.

4. As a result of the collision, does the total momentum of the system increase, decrease, or remain the same? Does the total kinetic energy of the system increase, decrease, or remain the same?

Highlight the correct answer

Momentum: ["The total momentum of the system increases.", "The total momentum of the system decreases.", "The total momentum of the system remains the same."]

Kinetic Energy: ["The total kinetic energy of the system increases.", "The total kinetic energy of the system decreases.", "The total kinetic energy of the system remains the same."]

5. A 10 kg puck initially moving at 20 m/s has a perfectly inelastic collision with a 20 kg puck.

a. Will the resulting velocity be greater than, less than, or equal to 10 m/s?

b. Calculate the resulting velocity (round to the hundredths). m/s

6. A 2000 kg car traveling at 8.0 m/s has a rear-end collision with a 1500 kg car stopped at a traffic light. The cars lock bumpers and skid off together.

a. Calculate the resulting velocity (nearest hundredths). m/s

b. Calculate the total kinetic energy of the cars before the collision and after the collision. (to the nearest thousands)

Before the collision: J

After the collision: J

7. Two 10 kg pucks head straight towards each other with velocities of 10 m/s and -20 m/s.

They collide and stick together. Calculate the resulting velocity. Give an exact answer.

Do not include units in your answer.

8. Two identical pucks of equal but unknown mass head straight towards each other with velocities of 8.0 m/s and -6.0 m/s. They collide and stick together. What is their resulting velocity?

7 m/s

-7 m/s

1 m/s

-1 m/s

can not be determined

9. A 1200 kg car traveling at an unknown velocity has a rear-end collision with a 1600 kg car parked in the road. The cars lock bumpers and skid off together at 3.0 m/s. What was the velocity of the 1200 kg car right before the collision? Give an exact answer. Do not include units in your answer.