Question

A 2100 kg pickup truck is towing a 650 kg boat up a hill, and is accelerating at 2.5 m/s2.

If the truck is exerting a 4500 N on the boat, what force is the boat exerting on the truck?

Answer 1

According to the Third Neewton's Law

$F_{12}=-F_{21}=-4500(N)$