Roll a ball weighing 0.4 kg on a horizontal table at a constant speed of 1.5 m / s. What is its kinetic energy equal to?

univerkov | December 8, 2020 | education

Given:
m = 0.4kg.
v = 1.5m / s.
Ekin. -?
Decision:
Ekin. = mv ^ 2/2
Ekin. = 0.4 * 1.5 ^ 2/2 = 0.45J. (Joules)
Answer: Ekin. = 0.45 J (Joules)

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