A ball weighing 500 g rolls on a horizontal table at a constant speed of 20 cm / s. What is its kinetic energy?
| November 29, 2020 | education
The kinetic energy is found by the formula: 0.5mV ^ 2
Let’s translate everything into the SI system:
500g = 0.5kg
20 cm / s = 0.2 m / s
Substitute the values:
Ek = 0.5 × 0.5 × 0.2 ^ 2 = 0.01 J
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