Two objects were lifted by a machine. one object had a mass of 2 kilograms and was lifted at the speed of 2 m/s. the other had a mass of 4 kilograms and was lifted at a rate of 3 m/s. which object had more kinetic energy while it was being lifted?"

Question

Joseph Hess

Physics

30 May, 19:32

Two objects were lifted by a machine. one object had a mass of 2 kilograms and was lifted at the speed of 2 m/s. the other had a mass of 4 kilograms and was lifted at a rate of 3 m/s. which object had more kinetic energy while it was being lifted?"

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Answers (1)

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Emilie Bridges · Answer 1

To find the kinetic energy KE=1/2 * mass * velocity ^2

for object 1 ke = 1/2 (2) (2^2) = 4 J

for object 2 ke = 1/2 (4) (3^2) = 18J

meaning object 2 as more kinetic energy