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Two stones are projected from the top of a tower 105 m high each with velocity of 20m/s. One is projected vertically upwards and other vertically downwards.
a) Calculate time each stone takes to reach ground.
b) With what velocity they will strike the ground.
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Answer :

kattar566

Answer:

where h is the initial height of the stone (105m), vi is the initial velocity of the stone (-20m/s), a is acceleration due to gravity (-10m/s^2), and t is the time it takes for the stone to reach the ground. Therefore, the time it takes for the stone projected downward to reach the ground is 1.2 seconds.

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Answer:

so average speed =9/10 unit per sec. 2)Now A to C through B total length 13 unit and time taken total 15sec. so average speed=13/15

Explanation:

so average speed =9/10 unit per sec. 2)Now A to C through B total length 13 unit and time taken total 15sec. so average speed=13/15 sexy simran

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