Benjamin is riding a unicycle. The tire of his unicycle has a circumference of 2.8, and the tire revolves 1.5 times per second. What is the distance Benjamin travels in 100seconds?
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Answer:
The wheel makes 1.5 revolutions per second.
In 100 seconds it will revolve 100 * 1.5 = 15 times (revolutions). Revolutions/sec * sec = revolutions
Each revolution travels 2.8 m.
In 15 revolutions is will travel 2.8 * 15 = 4.2 m. m/revolution * revolutions = m
The trick with "rate" problems usually is to make the units work!
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The tire revolves 1.5 times per second for 100 seconds
1.5×100=150
The tire revolves 150 times
The circumference of the tire is 2.8m, and the number of revolution is 150
2.8×150= 420
Benjamin travels 420 m
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