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The mass of cyclist together with the bike is 90kg.calculate the increases in kinetic energy if the speed increases from 6.0 km/h to 12km/h.

The mass of cyclist together with the bike is 90kg.calculate the increases in kinetic energy if the speed increases from 6.0 km/h to 12km/h.

Grade:12th pass

1 Answers

Vikas TU
14149 Points
7 years ago
When speed is 6km/h then the kinetic energy is: => 0.5 * 90 * 1.66 * 1.66 = > 125 joule approx.
With speed 12km/hr. => 0.5 * 90 * 3.33 * 3.33 => 500 joule approx.
Change in Kinetic Energy = 500 – 125 = > 375 joule.

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