Momentum
What type of quantity is momentum because it must have direction?
Vector
Keeping an amount the same
A collision involves at least how many objects?
2
What is the definition for vector?
A quantity with magnitude and direction
Impulse is a ______ in momentum
change
Does an object have momentum if it is a rest?
No!
What does the law of conservation of momentum state?
What are the two types of collisions?
Elastic and inelastic
What is the definition for collision?
What are the units for Impulse?
Ns
mom = m * v
If an object explodes but its initial momentum was 0 since it was at rest, what must the final momentum be?
0
If Object A has a mass of 10 kg and is moving to the right at 5 m/s and Object B has a mass of 20 kg and is moving to the left at 10 m/s, what is the total momentum of the collision?
150 kgm/s to the left
What are two key differences between elastic and inelastic collisions?
Elastic are not common, while inelastic are
Elastic bounces perfectly, while inelastic does not
Holiday Music (Artist and/or Title)
Song
What is the momentum of a 20 kg object traveling at 5 m/s up?
100 kgm/s up
When shooting a slingshot, after releasing the object forward, what direction is the slingshot going to balance cancel out the momentum?
If Object A has a mass of 10 kg and is moving to the right at 5 m/s and Object B has a mass of 20 kg and is moving to the left at 10 m/s, what is the total mass of the two objects when they move in the same direction?
30 kg
What is the definition of impulse and what does it require to calculate? (2 parts)
change in momentum; requires force and time
What is the impulse on an object if 5 N of force are applied for 25 seconds?
125 Ns
Which object has the most momentum?
A: 2000 kg parked car
B: 100 kg person running 3 m/s to the right
C: 700 kg motorcycle moving at 0.5 m/s forward
C (350 kgm/s forward)
A system has a total momentum of 200 kgm/s West. If there is no outside net force on it, what will its total momentum be after 15 seconds?
200 kgm/s West
If Object A has a mass of 10 kg and is moving to the right at 5 m/s and Object B has a mass of 20 kg and is moving to the left at 10 m/s, what is final velocity of A + B moving together?
5 m/s to the left
What is the definition for momentum, including nickname in answer and the equation? (2 parts)
An object's mass times its velocity; also known as "inertia in motion"