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A ball is thrown vertically upwards. It ...

A ball is thrown vertically upwards. It goes to a height 20 m and then returns to the ground. Taking acceleration due to gravity g to be `10 "m s"^(-2)` ?, find the total time of journey of ball.

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To solve the problem of finding the total time of journey of a ball thrown vertically upwards to a height of 20 m and then returning to the ground, we can follow these steps: ### Step 1: Understand the motion of the ball The ball is thrown upwards, reaches a maximum height, and then falls back to the ground. The total time of the journey consists of the time taken to ascend (t1) and the time taken to descend (t2). ### Step 2: Use the equations of motion We can use the second equation of motion: \[ s = ut + \frac{1}{2} a t^2 \] ...
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