tito and michael put 1200 joules of work into pushing a box up a ramp but only 300 joules of work is output for moving the box. what is the efficiency of the ramp? efficiency= output work/ input work x 100%
A)25%
B)4%
C).25%
D)360,000%
A)25%
B)4%
C).25%
D)360,000%