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A bicycle has a momentum of [tex]$36 \, \text{kg} \cdot \text{m} / \text{s}$[/tex] and a velocity of [tex]$4 \, \text{m} / \text{s}$[/tex]. What is the mass of the bicycle?

A. 9 kg
B. 32 kg
C. 40 kg
D. 144 kg

Answer :

Let's solve the problem step-by-step.

We are given the momentum and velocity of a bicycle, and we need to find its mass.

The formula that relates momentum (p), mass (m), and velocity (v) is:

[tex]\[ \text{momentum} = \text{mass} \times \text{velocity} \][/tex]

We can rearrange this formula to solve for mass:

[tex]\[ \text{mass} = \frac{\text{momentum}}{\text{velocity}} \][/tex]

Now, let's substitute the given values into this formula:

- Momentum ([tex]\( p \)[/tex]) = [tex]\( 36 \, \text{kg} \cdot \text{m/s} \)[/tex]
- Velocity ([tex]\( v \)[/tex]) = [tex]\( 4 \, \text{m/s} \)[/tex]

So,

[tex]\[ \text{mass} = \frac{36 \, \text{kg} \cdot \text{m/s}}{4 \, \text{m/s}} \][/tex]

When we divide these values, we get:

[tex]\[ \text{mass} = 9 \, \text{kg} \][/tex]

Therefore, the mass of the bicycle is [tex]\( 9 \, \text{kg} \)[/tex].

So, the correct answer is:

[tex]\[ \boxed{9 \, \text{kg}} \][/tex]

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