A body is thrown vertically upwards with initial velocity of 100m/s.Find 1.time taken to reach at maximum height 2.maximum height attend 3.velocity after 5 sec 4.velocity after 16 sec. Take a=10m/s2.
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Expert's answer
2012-08-09T10:48:48-0400
1. Here is the formula for the height of a body:
H(t) = Vt - gt²/2
Let's derivate it by t:
H'(t) = V - gt
So,
V - gt = 0 ==> t = V/g = 100 [m/s] / 10 [m/s²] = 10 s;
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