Basic Momentum and Impulse Quiz

Which equation is used to calculate momentum (p)?

This box is at rest. 2 [N] applied force is trying to push it right (red force vector). 2 [N] of applied force is trying to push it left (blue force vector).

What is the momentum of the box?

This box started at rest with zero momentum. Now it is moving rightward with velocity v = +4 [m/s]

What is the momentum of the box?

Which equation is used to calculate impulse (j)?

This box started at rest with zero momentum.

This is the left image.

A 4 [N] rightward force pushed on it for 5 [s]. The right image shows the final position, time and velocity. What impulse acted on the box during this 5 second time duration?

These jelly guys form a system of two objects. The image shows both of them before a collision.

The momentum of object #1 is 2 [kg*m/s]. What is the TOTAL momentum of the system?

Here is an image of 2 jelly guys about to collide. Together they form a system of 2 objects. Which statement is true about the total momentum of this system?

• The total kinetic energy after the collision remains the same as the total momentum before the collision.

• The total momentum after the collision remains the same as before the collision.

• Total momentum always decreases in a collision.

• Because jelly guys are elastic, the total momentum will be zero after the collision.

What is the name for a collision that has NO loss of energy to heat and NO deformation of the two objects?

• A perfectly inelastic collision.

• A perfectly elastic collision.

• A nuclear collision.

• A partially elastic collision

Here is an image of 2 jelly guys about to collide. Together they form a system of 2 objects. When they collide they will MERGE into a single combined object. What type of collision will this be?

• A perfectly inelastic collision.

• A perfectly elastic collision.

• A nuclear collision.

• A partially elastic collision

Here is the same system of two jelly guys BEFORE a perfectly inelastic collision. Before the collision the total momentum is -1 [kg*m/s]. What is the total momentum AFTER the collision?

• 0 [kg*m/s]

• 10 [kg*m/s]

• -1 [kg*m/s]

• 3 [kg*m/s]