Question

forces that change motion quick check
a hockey puck with a mass of 0.12 kg is traveling across the ice at a velocity of 150 m/s downfield. what is the momentum of the hockey puck? (1 point)
○ p = 8 10 – 4 kg m/s
○ p = 18 kg * m/s
○ p = 18 n
○ m = 18 kg * m/s

Explanation:

Step1: Recall the momentum formula

The formula for momentum \( p \) is \( p = m \times v \), where \( m \) is mass and \( v \) is velocity.

Step2: Substitute the given values

Given \( m = 0.12 \, \text{kg} \) and \( v = 150 \, \text{m/s} \). Substitute into the formula: \( p = 0.12 \times 150 \).

Step3: Calculate the result

\( 0.12 \times 150 = 18 \, \text{kg·m/s} \). The symbol for momentum is \( p \) (or sometimes \( P \) as in the options), so the correct expression is \( P = 18 \, \text{kg·m/s} \).

Answer:

B. \( P = 18 \, \text{kg} \cdot \text{m/s} \) (assuming the second option is labeled B; adjust the label as per the original question's numbering if different, but the value and unit are correct for momentum here)