A bat exerts force of 755N on a 320g ball that approaches the bat at 40 m/s and leaves at 64 m/s. How long was the ball in contact with the bat?

Answer 1

change of momentum = force * time

.320 (40+64) = 755 t

Answer 2

thank you!

Answer 3

You are welcome.

Answer 4

why do you add the 40 and 64...should you not calculate the change in them?

Answer 5

opposite directions

64 - (-40) = 64 + 40

Answer 6

the change from 40 east to 64 west is 40+64 :)

Answer 7

understood thanks! i was overlooking the opposite direction