Question

how much force is needed to accelerate a 68 kg skier at a rate of 1.2 m/s²?

Explanation:

Step1: Recall Newton's second law

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

Step2: Substitute the given values

Given \(m = 68\space kg\) and \(a=1.2\space m/s^{2}\). Substitute into the formula: \(F=(68)(1.2)\).

Step3: Calculate the force

\(F = 68\times1.2=81.6\space N\)

Answer:

\(81.6\space N\)