Question

A cart went 60m in a straight line on a plain and smooth road done by the force? a force of 3N was applied to it. How much work was done by the force?

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Answer 1

Answer:

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