Question

A moving body has a kinetic energy equal to 10 J. What is the work done to double the

velocity ?​

Answer 1

Answer:

40 jule

Explanation:

we know that kinetic energy = 1/2mv2

by this relation we find a condition that k is directory proportional to v2 .if we increase the velocity the kinetic energy will also increase,and if we decrease then it also decreases.

kinetic energy1/ kinetic energy 2 =v1 square/v2 square

=10/kinetic energy 2=v1 square /2v2 ka square

kinetic energy 2 =40 jule.