Question

0.36
An elevator is rising at constant speed. Consider the following statements:
I. The upward cable force is constant
II. The kinetic energy of the elevator is constant
III. The gravitational potential energy of the Earth-elevator system is constant
IV. The acceleration of the elevator is zero
A. all five is true
B. only II and V are true
C. only IV and V are true
D. only I, II, and IV are true

Answer 1

Answer:

D. only 1,2and4are true