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Which force can possibly act on a body moving in a straight line?(a) Tangential force(b) Friction force(c) Centrifugal force(d) Centripetal forceI had been asked this question during an online exam.This interesting question is from Introduction to Motion in a Straight Line in chapter Motion in a Straight Line of Physics – Class 11

Answer»

The correct answer is (b) Friction FORCE

Best explanation: In the PHYSICAL world, no SURFACE is frictionless. Hence whenever a body moves, the force of friction acts on it. REST all forces act on the body only when it moves ALONG a curve and not along a straight line.



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