Question

Which has more momentum: a 20,000 kg cement truck traveling at 5 m/s or a 1000 kg. race car traveling at 90 m/s?

Answer 1

The cement truck has a greater momentum.

Explanation:

`p_1=m_1v_1` and `p_2=m_2v_2`. Plugging the values in:

• `p_1=20000kg\cdot 5\frac m s=10\cdot 10^4\frac{mkg}{s}`
• `p_2=1000kg\cdot 90\frac m s=9\cdot 10^4\frac{mkg}{s}`

So the cement truck has a greater momentum.