- #1
youmei0426
- 18
- 0
Homework Statement
Homework Equations
F=ma=mv/t[/B]
The Attempt at a Solution
I used the equation F=mv/t, in which I find the change in velocity and change in time before and after the collision. The change in time is t2-t1, but the problem comes when I am calculating the change in velocity. Shouldn't the change be (v-u)? The answer is D, in which the velocity becomes the sum of u and v, and I don't understand why. Thanks in advance!