Question

10. A hockey slap-shot is hit at the goal, 30 meters away. The puck, which weighs 0.250 kg, covers that distance in 0.38 seconds. How much momentum does the puck have?

Answer 1

Question #14313

Given that the puck covered 30 meters in 0.38 seconds, find the velocity $v = \frac{30m}{0.38s} \approx 75.95 \, \text{m/s}$.

The momentum (linear momentum) is given by $p = m v$, hence $p = 75.95 \, \text{m/s} \cdot 0.25 \, \text{kg} \approx 19.74 \, \text{kg} \cdot \text{m/s}$.