Sample problem 1. A 1000.0 kg truck is traveling at an acceleration of 4.5000 m/s2, East. Find
the net force needed to accelerate the truck.
Given: a = 4.5000 m/s2, East
m = 1000.0 kg
Find ΣΕ.

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)