A stone of mass 2.0kg is thrown vertically upward with a velocity of 20.0 ms
PHYSICS
WAEC 2006
A stone of mass 2.0kg is thrown vertically upward with a velocity of 20.0 ms-1, calculate the initial kinetic energy of the stone
- A. 200J
- B. 400J
- C. 800J
- D. 1600J
Correct Answer: B. 400J
Explanation
K.E = \(\frac{1}{2}Mv^2 = \frac{1}{2} \times 2 \times 20^2 = 400J\)
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