a boy throws a ball straight up into the air. it reaches its highest point after 4 seconds.how fast was the ball going when it l
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Answer:
let m be the mass of the object, K be the force constant and Fs be the force by the spring on the mass.
The free fall of the phone is an uniformly accelerated motion toward the ground, with constant acceleration equal to
So, assuming the downward direction as positive direction of the motion, since the phone starts from rest the distance covered by the phone after a time t is given by
And if we substitute t=2.7 s, we find the distance covered:
So, assuming the downward direction as positive direction of the motion, since the phone starts from rest the distance covered by the phone after a time t is given by
And if we substitute t=2.7 s, we find the distance covered: