Question

Kinetic energy of a body depends only on the speed and not on the

velocity of the body. During non uniform ircular motion kinetic

energy of the body is not constant. During work done on the body

kinetic energy always changes. During free fall of a body kinetic

energy conserve in the form of potential energy. Same retarding

force acts on heavy and light body is if they are moving with same

Kinetic energies and travel the same distance before coming to rest ?

1. If there is no change in the speed of a particle or a body

then work done by a force is always:

(a) positive (b) negative

(c) zero (d) none of these

2. Kinetic energy of a body cannot be divided into its horizontal and

vertical component because:

(a) Kinetic energy is a scalar quantity

(b)kinetic energy is a vector quantity

(c) both a and b

(d) none of these

3. Relation between Kinetic energy and linear momentum of a body

is:

(a) E= P/2m (b) E=P/4m

(c) P=2E/m (d) P2=2mE

4. When a body is travelling in a circular path with uniform speed

then kinetic energy the body will be always:

(a) zero (b) constant

(c) negative (d) none of thesejk,,l,jl,ljl, ,j​

Answer 1

Answer:

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