Question

1. a 0.18 kg ball is thrown straight up into the air with an initial speed of 18 m/s. find the momentum of the ball at its maximum height.

Explanation:

Step1: Recall momentum formula

Momentum is defined as $p = m \cdot v$, where $m$ is mass and $v$ is velocity.

Step2: Identify velocity at max height

At maximum height, the upward-moving ball stops momentarily, so its velocity $v = 0 \, \text{m/s}$.

Step3: Calculate momentum

Substitute $m = 0.18 \, \text{kg}$ and $v = 0 \, \text{m/s}$ into the formula.
$p = 0.18 \cdot 0$

Answer:

$0 \, \text{kg·m/s}$