Suppose a body that is acted on by exact...

Suppose a body that is acted on by exactly two forces is accelerated. For this situation mark out the incorrect statements.

the body can not move with constant speed

the velocity can never be zero

the resultant of two forces cannot be zero

the two forces must act in the same line

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The correct Answer is:

A, B, D

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A particle is moving in a circular path with decreasing speed. For this situation, mark out the correct statements.

radial component of its acceleration is decreasing in magnitude

the angular speed of the particle is decreasing

tangential component of its acceleration and velocity are in opposite directions

the particle is performing a non-uniform circular motion

Static friction is always greater than the kinetic friction

Coefficient of static friction is always greater than the coefficient of kinetic friction

Limiting static friction is always greater than the kinetic friction.

Limiting friction is never less than static friction