Author Question: A hill is 150 m long and makes an angle of 12 with the horizontal. As a 60-kg jogger runs up the ... (Read 50 times)

pepyto · **on:** Jul 28, 2018

A hill is 150 m long and makes an angle of 12 with the horizontal. As a 60-kg jogger runs up the hill, how much work does gravity do on the jogger?
a. 8.82E+4 J
b. 1.83E+4 J
c. 1.83E+4 J
d. 8.63E+4 J
e. zero

Question 2

Samantha pushes a 60-N crate up a ramp 30 m in length and inclined at 10 with the horizontal. What potential energy change does the crate experience?
a. 1.8E+3 J
b. 1.8E+3 J
c. 1.2E+1 J
d. 3.1E+2 J
e. 1.0E+4 J