If a body is moving with constant velocity, what is the net external force acting on it?

A. 0 — According to Newton's first law, if a body moves with constant velocity, its acceleration is zero. Since force is mass times acceleration, the net external force must be zero.

JEE Advanced · PhysicsEasy

$If a body is moving with constant velocity v, what is the net external force F_{net} acting on it?$

A. $0$
B. $> 0$
C. $< 0$
D. $\infty$

Show correct answer & step-by-step solution

Correct answer: A — $0$

Solution

Since v is constant, a = d v / d t = 0 . By Newton's second law, F_{net} = ma = m (0) = 0 .

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If a body is moving with constant velocity v, what is the net external force Fnet​ acting on it?

Solution

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$If a body is moving with constant velocity v, what is the net external force F_{net} acting on it?$