a body falls rest undet gravity and cover a distance 44.1m in last one second of journey . if g=9.8 then total time of fall
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s=ut+1/2at^2
where s is distance travelled..
u is initial velocity...
a is accn..
t is time taken..
s=1/2at^2 as under freefall initial velocity is zero...
so..
44.1=1/2*9.8*t^2
t^2=44.1/4.9
t=9 seconds...
where s is distance travelled..
u is initial velocity...
a is accn..
t is time taken..
s=1/2at^2 as under freefall initial velocity is zero...
so..
44.1=1/2*9.8*t^2
t^2=44.1/4.9
t=9 seconds...
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