Question

product of velocity vector and force vector
a)vector
b)power,scalar
c) workdone
d)workdone,scalar​

Answer 1

Answer:

Answer of the question is B. Power, scaler

Answer 2

Answer:

Product of velocity vector and force vector is Power which is scalar product.

Option(b) is correct.

Explanation:

Power:

• Power is defined as the rate of work done with respect to time.
• P = dW/dt

          where W is the work done and t is the time

• Power is the amount of energy transferred or converted per unit time.
• The unit of power is watt or one joule per second.

Power is related to some other quantities such as

• The power involved in moving a ground vehicle is the product of the force on the wheels and the velocity of vehicle.
• Likewise, the power dissipated in an electrical element of a circuit is the product of the current flowing through the element and of the voltage across the element.

• From the fundamental theorem of calculus

         we can write

           P = dW/dt = d/dt(∫F. v dt) = F. v

       Hence, P = F. v

                      where F is the force and v is the velocity.

 

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