Physics Practice Problems Work & Unit Vectors Practice Problems Solution: (a) A 3.00-kg object has a velocity (6.00 i - 2.00...

Solution: (a) A 3.00-kg object has a velocity (6.00 i - 2.00 j) m/s. What is its kinetic energy at this moment?(b) What is the net work done on the object if its velocity changes to (8.00 i + 4.00 j) m/s?

Problem

(a) A 3.00-kg object has a velocity (6.00 i - 2.00 j) m/s. What is its kinetic energy at this moment?
(b) What is the net work done on the object if its velocity changes to (8.00 i + 4.00 j) m/s?