A happy graduate throws her cap into the air. It comes back to her hand (at the same height) in exactly 2.0 seconds. With what v
elocity did she originally throw the cap? Assume the acceleration due to gravity is -10 m s2 .
2 answers:
v_f=0
(1)
having into account that the total time spent in air till the cap came to her hands is Ttotal=2*t
where t is the time which the cap spent to reach the heighest point or the maximun height. so;
Ttotal=2second
t=1sec
we then replace t into the equation(1);
this is the initial velocity with which the cap was thrown
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