Question

a runner has a mass of 89 kilograms. he produces a force of 84 newtons between the ground and his running shoes. how fast does he accelerate?

Answer 1

The acceleration of the runner is 0.9 m/s^2

F=ma

Force = 84 N
Mass = 89 Kg
Therefore -
F = ma
84 = 89 x a
a = 84/89 = 0.9 m/s^2