Question

a force f is equal to 2 iCAP + J cap + K cap newton is acting on a particle moving with constant velocity V is equal to iCAP + 2 J cap + K cap metre per second power delivered by forces​

Answer 1

Answer:

Power=5 units.

Explanation:

since we know that the definition of power is the derivative of work done with respect to the time.

$P=\frac{dw}{dt}$.............................(1)

work done=force x displcaement................(2)

using (1) and (2) we get,

so,$power=\frac{d(Force\times\ Displacement)}{dt}$

$power=F.v$

v=velocity which is defined as the derivative of displacement with respect to time.

Since force and velocity is given in the question

$F=2\hat{i}+\hat{j}+\hat{k}$

$v=\hat{i}+2\hat{j}+\hat{k}$

Power=($2\hat{i}+\hat{j}+\hat{k}$).($\hat{i}+2\hat{j}+\hat{k}$)

so power=2+2+1

Power=5 units.

Answer 2

Answer:

5watt

Explanation:

......................here ....hope it helps