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?

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

Explanation:

Step1: Recall momentum formula

$p = m \times v$

Step2: Substitute given values

$p = 55\ \text{kg} \times 15\ \text{m/s} = 825\ \text{kg·m/s}$

Step3: Match direction of velocity

Momentum direction = west (same as velocity)

Answer:

B. 825 kg·m/s west