Question

A stone is released from top of a building of 4.9 calculate time taken by it and the velocity of object at end of 2.5 metre ..

I need WHOLE SUM
(ANSWER : 1sec.,7 METRE PER SECOND​​

Answer 1

Given, a=g=10m/s

2

t=4s

u=0m/s {Initial velocity at rest}

So, height= ut+

2

1

at

2

=(0)(u)+

2

1

(10)(16)

=80m

∴ Height of the tower= 80m .

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