Momentum
p = mv
Warm-Up
Compare the force the big box exerts on the little box with the force the little box exerts on the big box.
Momentum
Momentum Song — The Hush Sound — Video SMTP
How Tough Is It to Stop?
"Which is tougher to stop, a bowling ball or a baseball?"
If the baseball had a much larger velocity, it would be harder to stop.
(technically, product of mass and velocity)
Defining Momentum
a) vector quantity
b) p has same direction as velocity
c) units - kg·m/s
Momentum and Collisions
Momentum helps us understand collisions
Kinetic Energy is conserved in perfectly elastic collisions
Same Momentum, Different Mass
"Could a moving baseball have the same momentum as a moving bowling ball?"
"Yes. p = mv. The baseball's velocity would have to be many times faster."
Force and Momentum
1) Relationship between force and momentum
Mathematical Relationship, F, p
What Determines the Change in Momentum?
The change in momentum that an unbalanced force produces on an object depends on ....
Follow Through Matters
"Could a female golfer EVER change the momentum of a golf ball more than a male golfer?"
2) Impulse
Combining all the equations
* J = Fnett = mΔv = Δp *
Write on your test immediately
before answering questions
Given this equation, what is another unit for momentum besides kg·m/s?
* J = Fnett = mΔv = Δp *