Question

A ball is thrown up with a velocity of 20ms.the time for which it will be in space is

Answer 1

The time taken by the ball is 2.04 seconds.

Explanation:

Given that,

Initial speed of the ball, u = 20 m/s

When it reaches the space the final speed of the ball, v = 0

Let t is the time taken by the ball to reach space. It will move under the action of gravity such that, a = g

$v=u+at$

a = -g

$0=u+at$

$t=\dfrac{u}{g}$

$t=\dfrac{20\ m/s}{9.8\ m/s^2}$

t = 2.04 seconds

So, the time taken by the ball is 2.04 seconds. Hence, this is the required solution.

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