Question

Question #e0a62

Answer 1

I got `25m`

Explanation:

We could use the relationship from Kinematics:

`v_f^2=v_i^2+2ad`

that, with your data for the first part, gives:

`15^2=30^2+2a*75`

solving for `a`:

`a=-4.5m/s^2`

we use this acceleration in `v_f^2=v_i^2+2ad` again for the second part where the final velocity will be zero and initial `15m/s`:

`0^2=15^2-2*4.5*d`

`d=25m`