JKSSB Mock Tests

Which of the following statements is true regarding the total mechanical energy of a freely falling body in a vacuum?

A. it increases continuously until it hits the ground
B. it decreases as potential energy is lost
C. it remains constant at all points during the fall
D. it first increases and then decreases due to gravity
Answer: Option C
Solution (By JKSSB Mock Tests Team)
In a vacuum, only conservative forces act; thus, the sum of kinetic and potential energy remains constant throughout the motion.
This Question Belongs to: General science Physics set 1
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