• Support PF! Buy your school textbooks, materials and every day products Here!

Magnitude and Momentum a.k.a. M&M

  • Thread starter roguekhost
  • Start date
  • #1
A rubber ball with a mass of 200 g is released from rest from a height of 2.0 m. It falls to the floor, bounces, and rebounds. The graph at right depicts the magnitude of the upward normal force that the floor exerts on the ball at various instants in time. The graph only shows the narrow window of time surrounding the interval when the ball was in contact with the floor.

a.) How long does it take the ball to fall the 2.0 m to the floor?

b.) How fast is the ball traveling just before it hits the floor?

c.) What is its momentum just before hitting the floor (using a coordinate system in which the positive-y axis points in the upward direction)?

d.) What is the impulse on the ball by the floor during the 10 ms the ball is in contact with the floor?

e.) What is the impulse on the ball by the earth’s gravitational pull during the same 10 ms?

f.) By how much does the ball’s momentum change as a result of this 10-ms period?

g.) How high does the ball rebound?
 

Answers and Replies

  • #2
2,063
2
rougekhost, as per the forum rules, you need to show your work first. And how are we to make sense of the problem without the graph?
 

Related Threads on Magnitude and Momentum a.k.a. M&M

Replies
3
Views
3K
Replies
1
Views
3K
  • Last Post
Replies
1
Views
7K
  • Last Post
Replies
5
Views
13K
  • Last Post
Replies
0
Views
9K
  • Last Post
Replies
2
Views
10K
  • Last Post
Replies
7
Views
22K
Replies
1
Views
2K
Replies
13
Views
3K
Top