# Homework Help: A Golf swing's force

1. Jan 17, 2009

In a typical golf swing, the club is in contact with the ball for about 0.0011 s. If the 45 g ball acquires a speed of 63 m/s, estimate the magnitude of the force exerted by the club on the ball.

Last edited: Jan 17, 2009
2. Jan 17, 2009

### Hootenanny

Staff Emeritus
What are your thoughts on the problem? What have you tried thus far?

3. Jan 17, 2009

i was trying mv^2/t
i think its actually mv^2/ t^2

4. Jan 17, 2009

### PhanthomJay

No, neither of these are correct; why do you think so? You are given m, t, and the speed of the ball after impact; you need to first identify the speed of the ball before impact, then find the average force of impact, using the proper equation that relates force with mass, speed, and time. What is that equation?

5. Jan 17, 2009

i worked backwards with the anwser i was given but i messed up and put a divid sign in there

the eqution i got was mv^2t^2
but i have some doubts about the anwser.

6. Jan 17, 2009

### PhanthomJay

7. Jan 17, 2009

thanks

8. Feb 13, 2010

### Basil01

I think we have to check the whether before we start the game. Working backwards may work. i didn't try it.

9. Feb 13, 2010

### raymo39

yeah, you just have to try and relate acceleration to speed and time and then acceleration to force