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
1
Answer:
Explanation:
686 watt see my explanation on the same question..on brainly...
Answered by
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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