A stone is dropped from a height of 20m
Asked by admin @ in Physics viewed by 274 People
A stone is dropped from a height of 20m. (i) How long will it take to reach the ground?(ii) what will be its speed when it hits the ground?
Answered by admin @
HEY DEAR ...
H=20m/s
u=0
v=?
t=?
v²-u²=2gh
v²-o²=2*10m/s * 20m
v=√400
v=20m/s[velocity with which stone hit the ground]
v=u+gt
20=0+10*t
t=2s[time to reach the ground]
HOPE , IT HELPS ...
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