Download Momentum

Momentum
22 May 2017
Focus Question:
 What does it mean when we say a team has momentum?
I. Momentum
A. Definition—
B. Formula-
 An object with a large mass
has a large amount of
momentum. The more
momentum an object has
the harder it is to stop.
 Which object has the greatest
momentum.
a) A person walking at 2 m/s.
b) A car moving at 20 m/s.
c) A mouse moving at 0.2 m/s.
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III. Law of Conservation of
Momentum
A. Law of Conservation of
Momentum—
There are many ways momentum is
affected by outside forces.
1.
a.
b.
When one object is moving hits an
object that is moving at a different
velocity some momentum is passed on
or transferred.
When a moving object hit a
nonmoving object all the momentum
is transferred to the object that was
not moving.
Momentum Before = 0
Momentum After = 0
After firing, the opposite momenta cancel.
IV. PRACTICE
1.
If you were running, you might have a mass of 50
kilograms and a velocity of 10 meters per second
west (really fast). What would your momentum
would be?
conservation of momentum is
M1V1=M2V2, use the formula to solve for
V1.
V. Class work
 Define momentum and the law of conservation of
momentum.
 Is it correct to say that, if no outside force or impulse acts on
an object, there is no change in momentum? Why or why
not?
 Which has a greater momentum, a heavy truck at rest or a
moving skateboard? Why?
Read the words in the box. Use the correct words to
fill in the blanks in the concept map about the
conservation of momentum.
Momentum
Transferred
The Law of
Conservation
of
Momentum
Velocity
Inertia
Is not
Lost
Mass
Acceleration
Conserved
Gained
Objects
collide.
or
Says that
a. ______________
b. ________
when