Question

A force acting on a body of mass 20kg changes its velocity from 20m/s to 40m/s in 5 seconds. Calculate the force​....


Plz guys answer this......❣❣​

Answer 1

Force =m

t

(v−u)

=m⋅a

Displacement =

2a

(v

2

−u

2

)

Word done (W) = Force × Displacement

=m⋅a⋅

2a

(v

2

−u

2

)

W =

2

1

m(v

2

−u

2

)

W =

2

1

×20×(2500−1600)

=

2

1

×20×900

=9000J

Therefore, the work done to attain the final velocity is 9000J

hey mate here is your answer

hope it helps you