- #1
DeepPatel
- 20
- 0
Homework Statement
A girl (starting from rest) is pushing a cart full of softballs at an angle of 30 degrees above the horizontal. She pushes with a force of 150N. She travels through the school store for 20 minutes and travels a total of 800meters.
a). How much work (in joules) does she do?
b). What is average power (in watts) over the entire time?
Homework Equations
W=Fdcos(theta), P=W/t, W=J/s
The Attempt at a Solution
For part a) I did W=Fdcos(theta) and got 103,923J and for part b) I'm not sure how to write the units because it is in minutes so I just converted 20 minutes to 1200 seconds and got 87 watts, I just don't think I did everything correct because of the large numbers and the units have confused me.