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If a 1 kg book has 46 Joules of gravitational potential energy how high is the shelf it is on? g = 9.8 m/s^2 KE = ½ mv^2 PE = mgh​
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If a 1 kg book has 46 Joules of gravitational potential energy how high is the shelf it is on?

g = 9.8 m/s^2 KE = ½ mv^2 PE = mgh​

User Milee
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1 Answer

7 votes

Answer:

4.7m

Step-by-step explanation:

Given parameters:

Mass of the book = 1kg

Gravitational potential energy = 46J

Unknown:

Height of the shelf = ?

Solution:

The potential energy is due to the position of a body above the ground.

Gravitational potential energy = mgh

m is the mass,

g is the acceleration due gravity = 9.8m/s²

h is the height which is unknown

46 = 1 x 9.8 x h

h = 4.7m

User Putri
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5.1k points
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