In mud buggy driving, people attempt to drive an off road vehicle over a deep mud puddle. If the buggy stops before the end, it sinks into the mud and needs to be pulled out with a tow truck. A racer is driving his mud buggy in a straight line . when he hits the edge of the mud puddle, he is going 20m/s. When he gets to the other side of the 25m wide puddle he has slowed to 5m/s. Assuming constant acceleration what was the mud buggys acceleration while driving through the puddle and how long did it take to cross the puddle?

Answer 1

V^2 = Vo^2 + 2a*d.
5^2 = 20^2 + 2a*25.
2a*25 = -375, a = -7.5 m/s^2.

V = Vo + a*t.
5 = 20 - 7.5t, t = 2 s.