A student throws a 140 g snowball at 7.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall if the duration of the collision is 0.19 s ?

Answer 1

momentum = .140 * 7.5

force = change of momentum / time
= .140 * 7.5 / .19

Answer 2

F = (mv - 0 ) / t
F = (0.15 x 8.5 - 0 )/ 0.15 = 8.5 N
F = rate of change of momentum

Answer 3

Melissa - your method is correct but numbers are different.

Answer 4

I'm sorry if my numbers are different I was trying to give an example so instead of just basically giving out the answer like candy I gave him/her a way to understand it better