Science 10AP 2020
Use the following information to answer the next question.
18. A student exerts a force of 130 N on a wagon that has a mass of 20.0 kg to moveitata
constant speed up a hil. The wagon travels 43.0 m along the slope before arriving at the
top of the hill. The net vertical gain in height of the wagon is 15.0 m, as shown in the
diagram below.
45.0 m
15.0 m
SN 150 N= Force
Y
196 N (20.0 kg)
a. What is the work input by the student?
b. What is the change in energy in gravitational energy of the wagon?
c. What is the useful work done by the studen(?
d. What js the efficiency of this energy transfer?
