Question

in a closed system, three objects have the following momentums: 110 kg·m/s, −65 kg·m/s, and −100 kg·m/s. the objects collide and move together. what is the total momentum after the collision? (1 point) ○ −55 kg·m/s ○ −275 kg·m/s ○ 55 kg·m/s ○ 275 kg·m/s

Explanation:

Step1: Recall conservation of momentum

In a closed system, total momentum is conserved, so total momentum after collision equals total momentum before collision.

Step2: Sum the initial momenta

Sum the three momenta: \(110 + (-65) + (-100)\).

First, \(110 - 65 = 45\). Then, \(45 - 100 = -55\).

Answer:

\(-55\space \text{kg}\cdot\text{m/s}\) (corresponding to the option: \(-55\space \text{kg}\cdot\text{m/s}\))