Name _____ KEY ____________________________________ Date _________ Period ______
Momentum
1.
In your words, what is the momentum of an object?

2.
Momentum is a measure of an object’s resistance to change motion.
A truck has a mass of 2,000 kilograms, and drives down Route 17 at 35 m/s. What is the
trucks momentum?
p = mv = (2000 kg)(35 m/s) = 70,000 kg·m/s
3.
An 8.0 kg bowling ball is rolling in a straight line toward you. If its momentum is
16kg·m/s, how fast is it traveling?
. ms
4.
A beach ball is rolling in a straight line toward you at a speed of 0.5 m/s. Its momentum
is 0.25 kg·m/sec. What is the mass of the beach ball?
. kg
5.
A 4,000. kg truck travels in a straight line at 10.0 m/sec. What is its momentum?
p = mv = (4000. kg)(10.0 m/s) = 40,000 kg·m/s
6.
A 1,400 kg car is traveling in a straight line. Its momentum is equal to that of the truck in
question 5. What is the velocity of the car?
. ms
7.
Which would take more force to stop in 10 seconds: an 8.0-kilogram ball rolling in a
straight line at a speed of 0.2 m/sec or a 4.0-kilogram ball rolling along the same path at a
speed of 1.0 m/sec?

8.
The 4.0 kg ball, because its momentum is 4 kg·m/s, while the 8.0 kg ball has a
momentum of 1.6 kg·m/s.
If a ball is rolling at a velocity of 1.5 m/s and has a momentum of 10.0 kg·m/s, what is
the mass of the ball?
. kg