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Work done by kinetic friction can be...

Work done by kinetic friction can be

A

positive, negative or zero

B

positive only

C

negative only

D

zero only

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The work done by kinetic friction on a body :

(A) : Kinetic friction force is non-conservative in nature . (R) : Net work done by kinetic friction on a block is always completely converted into heat .

STATEMENT-1 Work done by static friction in any reference frame is zero STATEMENT-2 If work done on the body is positive its kinetic energy increases.

Can the work by kinetic firctionon an object be positive? Zero?

A : Work done by friction can increase the kinetic energy of the body. R : Friction is a type of contact force and it always opposes the relative motion or tendency of relative motion.

A ball is given a speed v o a rugh horizontal surface. The ball travels through a distance l on the surface and stops. A. What are the initial and final kinetic energies of the ball? b. What is the work done by the kinetic friction?

Assertion :- Work done by frictional force may be sometimes path independent. Reason :- Frictional force is a non - conservative force.

Work done by a frictional force is

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