Question

At a maximum height (1.20 m) E = _____ PE = _____ KE =_____ h = 1.20 m v = 0 m/s m = 0.620 kg g = 9.81 m/s2

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Answer 1

E = 7.30 J

PE = 7.30 J

KE = 0

Explanation:

Given;

maximum height, h = 1.2 m

mass of the object, m = 0.62 kg

velocity, v = 0 m/s

acceleration due to gravity, g = 9.81 m/s²

To determine;

1. total energy, E =?
2. Potential energy, PE =?
3. Kinetic energy, KE =?

The potential energy, PE = mgh

PE = 0.62 x 9.81 x 1.2

PE = 7.30 J

The kinetic energy, KE = ¹/₂mv²

KE = ¹/₂ x 0.62 x 0

KE = 0

The total mechanical energy, E = PE + KE

E = 7.30 J + 0

E = 7.30 J