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A large truck is moving at [tex]$22.0 \, \text{m/s}$[/tex]. If its momentum is [tex]$125,000 \, \text{kg} \cdot \frac{\text{m}}{\text{s}}$[/tex], what is the truck's mass?

A. 176 kg
B. 2750 kg
C. 5680 kg
D. 11,400 kg

Answer :

To determine the mass of the truck, we use the formula for momentum. The formula for momentum ([tex]\(p\)[/tex]) is given by:

[tex]\[ p = m \times v \][/tex]

where
- [tex]\(p\)[/tex] is the momentum,
- [tex]\(m\)[/tex] is the mass, and
- [tex]\(v\)[/tex] is the velocity.

In this problem, we are given:
- Momentum ([tex]\(p\)[/tex]) as 125,000 kg·m/s,
- Velocity ([tex]\(v\)[/tex]) as 22.0 m/s.

We need to find the mass ([tex]\(m\)[/tex]). We can rearrange the formula to solve for mass:

[tex]\[ m = \frac{p}{v} \][/tex]

Substituting the given values into this formula:

[tex]\[ m = \frac{125,000 \text{ kg·m/s}}{22.0 \text{ m/s}} \][/tex]

[tex]\[ m = 5681.818181818182 \text{ kg} \][/tex]

So, the mass of the truck is approximately 5680 kg when rounded appropriately.

The closest option from the given choices is 5680 kg.

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