Notes

The following topics are covered in this chapter.

• Define momentum as the product of the mass and velocity of the object
• State that momentum is a vector
• Calculate the momentum in one dimension of a moving object using p=mv

Notes

The following topics are covered in this chapter.

• State Newton's second law in terms of momentum: The net force acting on an object is equal to the rate of change of momentum. (Note: there are two acceptable statements of Newton's Second Law)
• Solve problems for constant mass using $F_{net}=\frac{\mathrm{\Delta <!--\; \Delta \; -->}p}{\mathrm{\Delta <!--\; \Delta \; -->}t}$

Notes

The following topics are covered in this chapter.

• Explain that an isolated (or closed) system is one that has no net external force acting on it
• Explain (when working with isolated systems) what is meant by internal and external forces
• State the law of conservation of linear momentum: The total linear momentum of an isolated system remains constant (is conserved)
• Solve problems by applying the law of conservation of momentum to interactions of two objects moving in one dimension (along a straight line) with the aid of an appropriate sign convention
• Define an elastic collision as a collision in which both momentum and kinetic energy are conserved
• Define an inelastic collision as a collision in which only momentum is conserved
• Identify elastic and inelastic collisions using calculations where necessary

Notes

The following topics are covered in this chapter.

• Define impulse as the product of the net force and the contact time $impulse=F_{net}\mathrm{\Delta <!--\; \Delta \; -->}t$
• Know that impulse is a vector quantity
• Know that $F_{net}\mathrm{\Delta <!--\; \Delta \; -->}t$ is a change in momentum, i.e. $F_{net}\mathrm{\Delta <!--\; \Delta \; -->}t=\mathrm{\Delta <!--\; \Delta \; -->}p$
• Solve problems using $F_{net}\mathrm{\Delta <!--\; \Delta \; -->}t=\mathrm{\Delta <!--\; \Delta \; -->}p$
• Apply the concept of impulse in everyday life, e.g. airbags, catching a hard ball