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A ball is thrown vertically upwards with...

A ball is thrown vertically upwards with a velcotiy of `20 ms^(-1)` from the top of a multi-storey building. The height of the point fromwher the ball is thrown if 25m from the ground. (a) How high the ball will rise ? And (b) how long will it be before the ball hits the ground ? Take. `g=10 ms^(-2)`.

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SL ARORA-MECHANICS-Exercise
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  8. A car along a starigth line for the first half time with speed 50 kmh^...

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  9. The displacement x of a particle at time t along a straight line is gi...

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  10. The displacement x of a particle is dependent on time t according to t...

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  11. The displacement x of a particle is dependent on time t according to t...

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  12. The displacement of a particle along the x-axis is given by x=3+8t+7t^...

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  13. The distance traversed by a particle moving along a straight lne is gi...

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  14. The distance traversed by a particle moving along a straight line is g...

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  15. The distance traversed by a particle moving along a straight lne is gi...

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  16. A race car accelerates on a straight road from rest to a speed of 180 ...

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  17. A bullet travellling with a velocity of 16 m/s penetrates a tree trunk...

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  18. A car moving along a stainght highway with a speed of 72 kmh^(-1) is b...

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  19. on turning a corner a car driving at 36kmh^(-1) finds a child on the r...

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  20. the reaction time for an automobile drive os 0.6s if the automobile c...

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  21. A car starts from rest and accelerates uniformly for 10 sto a velocity...

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