Question

What is the momentum of a bus that weighs 13,500,000 grams traveling at 65 mph?

Answer 1

The momentum of the bus is $3.93\cdot 10^5 kg m/s$

Explanation:

The momentum of an object is given by

$p=mv$

where

m is the mass of the object

v is its velocity

For the bus in this problem, we have

$m=13,500,000 g = 13,500 kg$ is its mass

$v=65 mph \cdot \frac{1609 m/mi}{3600 s/h}=29.1 m/s$ is the velocity, converted into SI units

Substituting into the equation, we find the momentum of the bus:

$p=(13,500)(29.1)=3.93\cdot 10^5 kg m/s$

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