Question

1. an olympic sprinter is traveling west at a velocity of 15 m/s and has a mass of 55 kg. what is the momentum?

70 kg·m/s east
3.67 kg·m/s east
45 kg·m/s west
825 kg·m/s west

Explanation:

Step1: Recall the formula for momentum

Momentum \(p = mv\), where \(m\) is mass and \(v\) is velocity.

Step2: Substitute the given values

Given \(m = 55\space kg\) and \(v=15\space m/s\) west.
\(p=(55\space kg)\times(15\space m/s) = 825\space kg\cdot m/s\)
Since the velocity is west, the momentum is also west.

Answer:

825 kg - m/s west