One object had a mass of 2kg and was lifted at a speed of 2m/s the distance being 10 m, the other had a mass of 4kg and was lifted at a rate of 3m/s the distance also being 10m. which object has more potential energy, the gravity being 9.8m/s^2

Potential Energy = mgh.

1st:   m = 2kg.  PE  = 2* 9.8 * 10 = 196 J.

2nd  m = 4 kg.  PE = 4* 9.8* 10 = 392 J.

Hence the second ball, has more potential energy, because it had the greater mass.

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