Question

A 75 kg softball player does a head-first dive and is sliding to a stop to the
right across the infield dirt. Her initial velocity was 4 m/s, and she comes to
a stop in 8 seconds. Find all forces. Ignore air resistance.

Answer 1

vf = vi + at

vf = 0

a = - (to stop (deceleration))

input the value:

0 = 4 m/s -a.8

8a = 4

a = 0.5 m/s²

F = m.a

F = 75 kg x 0.5 m/s²

F = 37.5 N