in selina text book it is given power equals force X speed where as it should be velocity since force is related with displacement since it is a vector quantity is it correct or not ?

Asked by Biplab Dasgupta | 4th Dec, 2015, 09:27: AM

Expert Answer:

Yes it is correct to certain extent. But, power is a scalar quantity. So, speed is taken for calculating power.
 
Also, distance is considered in the direction of force at the first place because we need the power to be a scalar.

Answered by Romal Bhansali | 4th Dec, 2015, 09:51: AM