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Learn high school physics multiple choice questions (MCQs): Uniform circular motion, physics study guide, dynamics and friction, physics: friction, with choices zero, variable, negative, and constant for online secondary education degree. Free physics study guide for online learning physics friction quiz questions to attempt multiple choice questions based test.

MCQ: Direction of centripetal force is always

1. towards centre
2. away from center
3. tangent to the circle
4. normal to the circle

A

MCQ: Momentum of an iscolated system of two or more than two interacting bodies remains

1. variable
2. zero
3. negative
4. constant

D

MCQ: Centripetal force is given by

1. (mV2) ⁄ r
2. r ⁄ mv
3. mvr
4. Vr

A

MCQ: Friction is reduced by

1. making sliding surfaces smooth
2. lubricating the surface
3. using ball bearings
4. all of above

D

MCQ: Maximum value of friction is known as the

1. initial friction
2. force of limiting friction
3. fixed friction
4. inertia

B