The net force acting on a moving object is non-zero, Identify which of the following condition is true about the object:
A
at rest
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B
gaining mass
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C
losing mass
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D
accelerating
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E
moving at constant velocity
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Solution
The correct option is C accelerating Second law of Newton states that net force on a body is directly proportional to the rate of change momentum , which gives
F=dp/dt=mdv/dt
as F is non-zero , it means dv is also non-zero ,therefore velocity is changing i.e. object is accelerating.