# Which has more momentum, a 5kg object moving at 4m/s or a 20kg object moving at 20m/s?

Oct 15, 2016

The 20-kg object has the greatest momentum.

#### Explanation:

The equation for momentum is $p = m v$, where $p$ is momentum, $m$ is mass in kg, and $v$ is velocity in m/s.

Momentum for 5 kg, 4 m/s object.

$p = \text{5 kg"xx"4 m/s"=20"kg"*"m/s}$

Momentum for 20 Kg, 20 m/s object.

$p = \text{20 kg"xx"20 m/s"="400 kg"*"m/s}$