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

A. 176 kg
B. 2750 kg
C. 5680 kg
D. [tex][tex]$11,400 \, \text{kg}$[/tex][/tex]

Answer :

Sure! Let's break down the problem step by step to find the truck's mass.

We are given:
- The truck's momentum, [tex]\( p = 125,000 \, \text{kg} \cdot \frac{\text{m}}{\text{s}} \)[/tex]
- The truck's velocity, [tex]\( v = 22.0 \, \text{m/s} \)[/tex]

To find the mass of the truck, we can use the formula for momentum:

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

Where:
- [tex]\( p \)[/tex] is the momentum
- [tex]\( m \)[/tex] is the mass
- [tex]\( v \)[/tex] is the velocity

We need to solve for [tex]\( m \)[/tex]. Rearranging the formula, we get:

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

Substitute the given values into the equation:

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

Now, perform the division:

[tex]\[ m \approx 5681.818 \, \text{kg} \][/tex]

Looking at the provided options:
1. 176 kg
2. 2750 kg
3. 5680 kg
4. 11,400 kg

The closest value to our calculated mass [tex]\( 5681.818 \, \text{kg} \)[/tex] is:

[tex]\[ \boxed{5680 \, \text{kg}} \][/tex]

So, the mass of the truck is approximately [tex]\( 5680 \, \text{kg} \)[/tex].

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