With what minimum speed must you toss a 200 g ball straight up to just touch the 12-m-high roof of the gymnasium if you release the ball 1.4 m above the ground? solve this problem using energy. express your answer to two significant figures and include the appropriate units.

v = 14.41 m/s

Explanation:

It is given that,

mass of the ball, m = 200 g = 0.2 kg

Height of the roof, h = 12 m

The ball is tossed 1.4 m above the ground, h' = 1.4 m

Let v is the minimum speed with which the ball is tossed. Using the conservation of energy to find it as :

v = 14.41 m/s

So, the minimum speed with which the ball is thrown straight up is 14.41 m/s. Hence, this is the required solution.

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