Question

A horizontal force of 10 N acts on a body of mass 1 kg at rest.
The work done by the body in 4 seconds is
a) 80 J
b) 800 J
c) 8J
d) 8000J
I want with solution ​

Answer 1

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• A horizontal force of 10 N acts on a body of mass 1 kg at rest.
• The work done by the body in 4 seconds is
• a) 80 J
• b) 800 J
• c) 8J
• d) 8000J

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Given :

U=0m/s

We know that

F=ma

a=F÷m

So,a=10÷1=10

We also know that : S=ut+1/2 at×t

= 1/2 ×10×16

=80

We also that

W=FS

10×80

=800J

So the answer is b

Answer 2

Answer:

ur correct option is option b