Asked by John
A projectile is shot vertically upward with a given initial velocity. It reaches a maximum height of 100 m. If, on a second shot, the initial velocity is doubled then the projectile will reach a maximum height of ____________?
Answers
Answered by
Steve
initially, all the energy is KE = 1/2 mv^2
At the peak, all the KE has become PE = mgh
So, with 2v at first, there's 4 times the KE. That means 4 times the height at the peak.
At the peak, all the KE has become PE = mgh
So, with 2v at first, there's 4 times the KE. That means 4 times the height at the peak.
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