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1. Let’s start with everyday language
What do you say when a sports
team is on a roll?
They may not have the lead but
they may have ___________
MOMENTUM
A team that has momentum is
hard to stop.

2. Momentum

3. Newton’s First Law
A body in motion
stays in
motion…unless acted
upon by an
unbalanced force
Momentum will only
deal with inertia in
motion

4. Use the words mass and velocity
Which hurts more if he hits you?

5. What is Momentum?
An object with a lot of momentum is also
hard to stop
Momentum: p = mass x velocity
Units: kg∙m/s
Momentum is also a vector (it has direction)

6. True or False? P=mv
Something
massive moving
fast carries a lot of
momentum
• True

7. True or False P=mv
Something
REALLY massive
moving slowly
carries a lot of
momentum.
• True

8. True or False P= mv
Something with
little mass doesn’t
carry much
momentum unless
it goes fast
• True

9. True or False P=mv
An object at rest
has a very small
amount of
momentum
• False, it has no
momentum

10. Review
Which has greater momentum?
Bubble Wrecking Ball

11. Let’s practice P=mv
• A 1200 kg car drives west at 25 m/s.
What is the car’s momentum?
• Identify the variables:
– 1200 kg = mass
– 25m/s, west = velocity
P = mv = 1200 kg x 25 m/s = 30 000 kg- m/s, west

12. A Project
• Get with your partner
• Divide your paper into 8 squares (hotdog,
hamburger, hamburger)
• On the top put objects with a lot of
momentum
• On the bottom, their opposites

13. Momentum
LARGE AMT OF MOMENTUM
Large Mass Large Mass High Velocity High Velocity
SMALL AMT OF MOMENTUM
Small Mass Small Mass Low Velocity Low Velocity