Physics Practice Problems Work & Unit Vectors Practice Problems Solution: A 4.5 kg object moving in two dimensions initially...

Solution: A 4.5 kg object moving in two dimensions initially has a velocity v1 = (11.5 i + 20.5 j) m/s. A net force F then acts on the object for 2.0 s, after which the objects velocity is v2 = (15.5 i + 30.5 j) m/s. Determine the work done by F on the object.

Problem

A 4.5 kg object moving in two dimensions initially has a velocity v1 = (11.5 i + 20.5 j) m/s. A net force F then acts on the object for 2.0 s, after which the objects velocity is v2 = (15.5 i + 30.5 j) m/s. Determine the work done by F on the object.