Physics, asked by kavithamahesh34, 1 year ago

a force of 10N acts on a body of mass 1kg at rest. The work done by the body in 4s is
A)80J
B)800J
C)8J
D)8000J

Answers

Answered by Ashishkumar098
1
Answer :-

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Firstly, recall the Momentum-Force Equation:

p = Ft


Substitute known variables into the equation.

p = ( 10.0 ) × 4


Solve for momentum.

p = 40 Ns.


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Secondly, recall the Momentum Equation:

p = mv


Substitute known variables into the equation.

40.0 = 4 v


Solve for velocity.


v = 10 m / s

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Thirdly, recall the Power-Force Equation :


P = Fv


Substitute known variables into the equation.


P = 10 × 10


Solve for power.


P = 100 w

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Next, recall the Work-Power Equation:

W = Pt


Substitute known variables into the equation.

W = 100 × 4


Solve for work.


W = 400 J

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•°• The answer is 400 J

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Thanks!
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