Question

A tennis ball of mass 56g is travelling at 1500 metres/minute. Which expression is equal to the kinetic energy, in joules, of the tennis ball?​

Answer 1

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Explanation:

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Answer 2

The formula for kinetic energy is following:

Joule is an energy unit in the SI system. 1 J = 1 kg×m²/s² . You need to convert the mass and velocity units into SI units - kg and m/s. 1 kg = 1000 m. 1 min = 60 sec.