A calculus problem by sri nath
Calculus
Level
pending
some commodities are dropped from helicopter and distance fallen in t seconds is x=1/2gt^ where g=9.8 m/sec^ after 2 seconds, what is the velocity of commodities?
19.4 m/sec
19.6 m/sec
20.4 m/sec
20.6 m/sec
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1 solution
let, distance X= 2 1 gt^
g=9.8 m/sec^
X= 2 1 9.8t^
velocity v= d x d v =9.8t m/sec
when after 2 seconds
v=9.8(2)=19.6 m/sec