Exit Ticket: Impulse Momentum Theorem

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

• -2.5

• -10

• -18

• -45

Softer landings tend to

• increase impact force

• increase force

• increase collision time

• increase change in momentum

The difference between a car hitting a wall vs. a car hitting a hay stack is

• the impulse on the car hitting the wall is greater

• the change in momentum of the car hitting the wall is greater

• the force on the car hitting the hay stack is greater

• the collision time of the car hitting the haystack is greater

The purpose of crumple zones in cars is to

• decrease time of impact

• increase force of impact

• increase the time of impact

• decrease the impulse during impact

The impulse-momentum theorem most likely states that

• the impulse on an object is equal to the change in momentum it causes

• the force on a moving object is equal to the magnitude of the impulse.

• the impulse on an object is greater than the change in momentum it causes

• the impulse on an object is less than the change in momentum it causes

A constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the change in the object's velocity?

• 6.3 m/s

• 3.2 m/s

• 1.2 m/s

• 4.33 m/s

If an air bag changes a 60 kg person's speed from 40.0 m/s to 0.0 m/s, what impulse must act on the person?

• 2400 kg.m/s

• 1.5 kg.m/s

• 
  0.67 kg.m/s

• 
  1500 kg.m/s

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and velocity

• mass and energy

A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s. What is the magnitude of the average force required to bring the mass to a stop in 8.0 seconds?

• 1 N

• 40 N

• 25 N

• 5 N