What is the potential energy of a 3 kg rock on top of a 40 m cliff? a120 J b1176 J c360 J d420
Question
Solution 1
The potential energy (PE) of an object can be calculated using the formula:
PE = mgh
where: m = mass of the object (in kg) g = acceleration due to gravity (approx. 9.8 m/s² on Earth) h = height above the ground (in m)
Given in the problem: m = 3 kg g = 9.8 m/s² h = 40 m
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