ANYONE KNOW HOW TO DO THIS??

Question

A child pulls a wagon 5.0 m using a force of 25 N at an angle 15 degrees above horizontal. The force of friction on the wagon is 8.1 N. Calculate the work done on the wagon in the horizontal direction.

a. 6.5 J

b. 24.1 J

c. 32.5 J

d. 80 J

e. 84.5 J

f. 125.1 J

g. 125 J

h. don't be silly, you can't calculate the net work without the change in KE!!

Answer 1

Work done = net force in horizontal direction x distance = (25 cos 15 - 8.1) x 5