Question

in the process.
4. Certain force acting on a 20 kg mass changes its velocity from
5 ms' to 2 m s. Calculate the work done by the force.​

Answer 1

Answer:

W=-210

Explanation:

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Answer 2

Explanation:

given:. mass =20

velocity 1= 5ms'

velocity 2= 2ms'

work done= ?

force= mg ,, 20x. 10

=200Newton

Work done1= force x displacement

= 200 x 5

=1000 joule

Work done2= force x displacement

=200 x 2

=400 joule