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In: Physics

A 30N ball has been thrown vertically up ward into the air from reference surface. It...

A 30N ball has been thrown vertically up ward into the air from reference surface. It has been observed that when the ball is 20m above the surface, its velocity reaches 30m/s. Find:
1- Theball'svelocityjustasitleftthesurface

2- Themaximumheighttheballreaches.

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