South Pasadena Physics “Notes”
Chapter 7 Introduction to Momentum
1.For any object to have momentum, there aretwo properties that it must have?
______and ______.
2.The formula for momentum is:p =
3.The units of momentum can be ______or ______
4. Create a short list of various objects that have momentum, from very large to very small:
______, ______, ______, ______,
5.What is the momentum of a 2.0, kg basketball being thrown with a velocity of 6.0 m/s?
6.What is the velocity of an electron with a mass of 9.11 x 10-31 kg, and a momentum of
2.28 x 10 -22 Newton-seconds?
7.Is it harder to slow down an object that has a large momentum or small momentum?
(circle the correct answer)
8.In order to slow down or stop an object with momentum, one must exert a(n)______on the object.
9.If a football player takes a fall while being tackled, would the player experience a greater impact force by the ground, if the ground was grass or cement? ______
10.Therefore, we can say that the ground or the cement is changing the momentum of the football player from some non-zero value to a value of ______.
11.This changing of the momentum of some moving object, has a special name and is not just called force, but it is called ______, which is the product of
______x ______.
12.Here is the complete formula for this idea:
13.Consider two cases where an object has a momentum to begin with and then ends up with zero momentum. Case 1: A baseball is caught barehanded.
Case 2: A baseball is caught with a glove.
Circle the correct response: The Impulse Value for Case 1 compared to Case 2: Changesor Does Not Change The Force Value for Case 1 compared to Case 2:Changes or Does Not Change.
14.Consider two cases where an object begins with zero momentum, but then is given some momentum.
Case 1: A golfball is hit with a given force by a club with follow through.
Case 2: A golfball is hit with the same given force but without follow through.
Circle the correct response: The Impulse Value for Case 1 compared to Case 2: Changesor Does Not Change The Force Value for Case 1 compared to Case 2: Changes or Does Not Change.