3. A `50.0 g` Super Ball traveling at `25.0 m//s` bounces off a brick wall and rebounds at `22.0 m//s`. A high-speed camera records this event. If the ball is in contact with the wall for `3.50 ms`, what is the magnitude of the average acceleration of the ball during this time interval?
`a = (∆v)/(∆t)`
`-1.34 times 10^4 m//s^2`
Givens: `v_i = 25.0 m//s` `v_f = -22.0 m//s` `∆t = 3.50 ms` Calculations: `a = (∆v)/(∆t) = (v_f - v_i)/(∆t)` `a = (-22.0 m//s - 25.0 m//s)/(3.50 times 10^(-3)s) =color(red)(-1.34 times 10^4 m//s^2)`