A body is dropped from a height of 80m. It strikes the ground in 4 seconds. Plot the a-t and v-t graphs assuming downward velocity and acceleration is negative.
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Step-by-step explanation:
Both the graphs are attached.
The Initial velocity of the body will be = 0 [As it starts from rest]
Acceleration due to gravity is constant = 9.8 m/sec² [Downward direction is taken as negative]
Final velocity = u+at
= 0-(9.8*4) = -39.2m/sec.
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