48. a 3 kg ball rolls with a velocity of 4 m/s. what is its momentum?

Explanation:

Step1: Recall momentum formula

The formula for momentum $p$ is $p = mv$, where $m$ is mass and $v$ is velocity.

Step2: Substitute given values

Given $m = 3\ kg$ and $v=4\ m/s$. So $p=3\times4$.

Step3: Calculate result

$p = 12\ kg\cdot m/s$.

Answer:

$12\ kg\cdot m/s$