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I. Momentum - the property of moving object has that makes it difficult to stop.

(technically, product of mass and velocity)

Momentum = mass x velocity

p = mv

(kgm/s)  (kg)(m/s)

Could a moving baseball have the same momentum as moving bowling ball? Yes. p=mv The baseball's velocity would have to many times faster.

a) vector quantity

b) p has same direction as velocity

c) units - kgm/s

1) Relationship between force and momentum

When a Force acts on a body it changes its' momentum.

Mathematical relationship, F, p

p = mv

Δp = mΔv

F = ma

Ft= mΔv

Δp = mΔv

Ft = Δp

Force is the time rate of change in momentum

How could a female golfer change the momentum of a golf ball more than a male golfer

Δp =  Ft

Force F, Follow through, t

The  change in momentum  that an unbalanced force produces on an object depends on how long the force acts on a body.

2) Impulse  J = Ft

(Ns) or (kgm/s)

Soccer ball kick - Dr. Dave's Hall of Fame

Combining all the equations

Write on your test immediately before answering questions