Question

What is the kinetic energy of a 900 lbm motorcycle traveling at 60 mph

Answer 1

to get answer in joules first convert miles/h and lb to SI units m/s and kg respectively

velocity=66mile/hour=30m/s

Answer 2

The kinetic energy of the motorcycle is $1.46\times 10^5\ J$.

Explanation:

Given that,

The mass of the motorcycle is 900 lbm. lbm is equal to pound mass.

Since, 1 pound = 0.453 kg

900 lbm = 408.2 kg

Speed of the motorcycle, v = 60 mph = 26.82 m/s

The kinetic energy is given by :

$K=\dfrac{1}{2}mv^2\\\\K=\dfrac{1}{2}\times 408.2 \times (26.82 )^2\\\\K=1.46\times 10^5\ J$

So, the kinetic energy of the motorcycle is $1.46\times 10^5\ J$.

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Kinetic energy

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