1.) You serve a volleyball with a mass of 2.1 kg.The ball Leaves your hand at 30m/s.The ball has kinetic energy.Calculate it.
kinetic energy = 1/2 m (v)square
= (2.1 × 30 × 30)/2
= 2.1 × 450
= 945 J
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Problem Solving
1.) You serve a volleyball with a mass of 2.1 kg.The ball Leaves your hand at 30m/s.The ball has kinetic energy.Calculate it.
Solution
kinetic energy = 1/2 m (v)square
= (2.1 × 30 × 30)/2
= 2.1 × 450
= 945 J
Final answer 945 J
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