Answer:
a) When work is done and a force is transferred an object must move in the direction of the force.
Step-by-step explanation:
As we know that work done is given by the equation
W = F . d
now when work is done and force is transferred
then in that case the work done must be positive
so here we can say that angle between force and displacement must be acute angle
so here the displacement of object must be in the direction of the applied force so that the work done is positive.
So here correct answer would be
a) When work is done and a force is transferred an object must move in the direction of the force.