A 42.9 kg wagon is towed up a hill inclined at 19.7◦ with respect to the horizontal. The
tow rope is parallel to the incline and exerts
a force of 165 N on the wagon. Assume that
the wagon starts from rest at the bottom of
the hill, and disregard friction.
The acceleration of gravity is 9.81 m/s
2
.
How fast is the wagon going after moving
22.5 m up the hill?
Answer in units of m/s.