If W= mg-ma is given, then we say that lift is moving in ......... direction?

Question

a) Upward b) Linear

c ) Tangential d) Downward

Answer 1

According to given information a net force =mg-ma.

Then you have information on net acceleration a_net=g-a;

that is, you know about changing of velocity, but not the velocity direction.

V(t)=V(o) + a_net t , and then direction depends on value V(0), time, and direction of a_net.