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Well, let%26#039;s see.... E_pe= mgh m=mass, g=9.80 m/s^2, h=height. E_ke=.5*mv^2... So,, we need to set up a situation where the inital is a variable, and the change of PE would cancel out the non-essential parts. So, for E0=mgh=.5mv^2,,, it seems like the reduction of 10kJ would equate to a loss of height. Gravity does not change and the mass would not change. Thus the only option left is for the height to change, and the velocity would be a function of height. (2gh)^.5 = v(h) So if you reduce the PE by 10kJ, then the KE reduces by 141 m/s, more or less. I think that%26#039;s right, I don%26#039;t have a calculator, so my math might be off. 100% 3 VotesOther Answers (0)
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