Question

a 60.0 kg sprinter starts a race with an acceleration of 2.28 m/s². what is the net external force (in n) on him? (enter the magnitude.)

Explanation:

Step1: Recall Newton's second law

Newton's second law is \(F = ma\), where \(F\) is the net force, \(m\) is the mass, and \(a\) is the acceleration.

Step2: Substitute the given values

Given \(m = 60.0\space kg\) and \(a=2.28\space m/s^{2}\). Substitute into the formula: \(F=(60.0\space kg)\times(2.28\space m/s^{2})\).

Step3: Calculate the force

\(F = 60\times2.28=136.8\space N\)

Answer:

\(136.8\)