.A stone is dropped from the top of a 30
m high tower. Calculate its speed after 10
s. Also find the speed with which the stone
strikes the ground. take g = 10 m/s2
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Answered by
3
Answer:
Given that,
Height = 40 m
Time t =2 sec
We know that,
v=u+gt
v=0+9.8×2
v=19.6m/s
The speed of stone is 19.6 m/s
Now, the speed with which the stone strikes the ground
v2=u2+2gs
v2=0+2×9.8×40
v2=784
v=28m/s
Hence, the speed with which the stone strikes the ground is 28 m/s
Answered by
9
Answer:
refer the pic in the attachment pls
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