Question

solve this...............​

Answer 1

Answer:

60 J .

Explanation:

Ur explanation is in the attachment....

First of all we have to find the kinetic energy in the first case.

The formula to find K.E. is 1/2 mv².

Then we have to find the K.E. of the next case.

So now work is done as K.E. is changed.

So work done will be the change of K.E.

So we subtract the K.E.

And the result is 60J.

Ur full process is in the attachment....