Question

Benjamin is riding a unicycle. The tire of his unicycle has a circumference of 2.8 \text{ m}2.8 m2, point, 8, start text, space, m, end text, and the tire revolves 1.51.51, point, 5 times per second. What is the distance Benjamin travels in 100 seconds? \text{m}mstart

Answer 1

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!

$\huge\color{purple}{ \colorbox{orange}{\colorbox{white} {Thanks}}}$

Answer 2

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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!