Posted by valentino anthony on Sunday, January 22, 2012 at 1:20am.
Assuming that potential energy is defined so that the value at ground level is zero, the total kinetic energy starts at M*g*H and remains that value until it hits the ground. Potential eneergy is changed to kinetic as it falls.
M = 8 kg
g = 9.8 m/s^2
H = 100 m
Total energy = ____ J
(Just multiply the three numbers)
7840
7840
Datas.mass=8kg,height=100m,distance=40m.And the question state find the total energy,so the addtion of kinectic & potential energy is the total energy. Ep=m*g*h.while g is constant at 10m/s^2.Ek =1/2 m*v^2.distance wil be represent velocity, so v=4om.after that add both answer 2gether.the answer is our total energy
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