After this lesson, you should be able to:

• Give examples demonstrating that a net force is required to change the momentum of an object
• Link this requirement to Newton’s first law of motion
• Represent change in momentum as a vector, the difference between the initial and final momenta of an object
• State Newton’s second law in terms of rate of change in momentum
• Determine the change in momentum of an object in a variety of scenarios, i.e. when

• Its velocity increases
• Its velocity decreases
• It changes direction