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Charra [1.4K]
3 years ago
15

A ball is thrown upwards and returns to the same location. Compared with its initial speed its speed when it returns is about___

_____________.
Physics
1 answer:
Strike441 [17]3 years ago
4 0

Answer:

Explanation:

Let the ball is thrown upwards with speed u and reaches upto height h.

Use III equation of motion

v^{2}=u^{2}-2gh

here, final velocity v = 0

So, u = \sqrt{2gh}

Now as the ball reaches the maximum height, it starts falling freely. Let it strkes with the ground with velocity v'.

v'^{2}=u^{2}-2gh

here, u = 0

So, v' = \sqrt{2gh}

It means the velocity is same as the velocity of projection.

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