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03/11/2021 12:34 pm
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A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall? (g = 8 m/s2)
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03/11/2021 12:37 pm
Initial velocity, u = 20 m/s
Final velocity, v = 0
Acceleration due to gravity, g = -9.8 m/s2
Height, h = ?
Using relation, for a freely falling body:
v2 = u2 + 2gh
(0)2 = (20)2 + 2 x (-9.8) x h
0 - 400 = -19.6 h
h = \(\frac{400}{19.6}\) = 20.4 m