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12 questions from this quiz
Kinetic, gravitational potential, elastic
Moving objects
Ek=12mv2E_k = \frac{1}{2}mv^2Ek=21mv2
Kinetic energy doubles
It increases by four times
78.4 J
When it is raised above the ground
Ep=mghE_p = mghEp=mgh
10 N/kg
In a stretched spring
Ee=12ke2E_e = \frac{1}{2}ke^2Ee=21ke2
Joules (J)
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