Question

Question #25d56

Answer 1

F= ma, but we have a few things to calculate first

Explanation:

One thing we don't know is time, but we do know distance and final speed, so `v={\Deltax}/{\Deltat}->\Deltat={\Deltax}/{v}`

Then, `t={7.2m}/{4.8m/s}=1.5s`

Then, we can calculate the acceleration `a={\Deltav}/{\Deltat`

So, `a={4.8 m/s}/{1.5s}->a=3.2m/s^2`

Finally, `F = ma = 63kg*3.2m/s^2=201.6N`