Physics, asked by guptabhai, 1 year ago

A force of 70 newton is applied on a body to produce a velocity of 9.8
msec. The power is equal to :
(1) 686.0 watt
(2) 860.5 watt
(3) 7600 watt
[4) None of the above

Answers

Answered by waytopacific
1

Answer:

Explanation:

686 watt see my explanation on the same question..on brainly...

Answered by santy2
1

Answer:

686 watts

Explanation:

Power is equal to the rate of work done.

And work = Force × distance

Power = Work / time

Expanding this we have :

Power = (force × distance) / time

We know that distance / time gives velocity.

That is :

Velocity = Distance / time

This further gives the formula of power as :

Power = Force × Velocity

At this point we can now solve our question above :

Force = 70 Newtons

Velocity = 9.8 m/s

Doing the substitution we have :

Power = 9.8 × 70 = 686 watts

The correct answer is therefore 686 watts.

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