Momentum
The letter for momentum is ____________
p
An object with a large amount of force exerted over a short period of time will experience a _________________ impluse.
An object with a large amount of force exerted over a long period of time will experience a ________________ impulse
greater
lower
What is the momentum of a 60-kg car moving eastward at 9 m/s.
540 kg*m/s, east
This type of collision is described as objects sticking together and moving as one after the impact
Inelastic
What has the greatest momentum a semi-truck at rest or a rolling skateboard?
Rolling skateboard
Momentum is a ______________ quantity with both magnitude and direction.
vector
True/False
For any collision occurring in an system (no outside forces), momentum is conserved.
True
Momentum of a 1000-kg car moving at 20 m/s NE.
20,000 kg*m/s NE
Collision where objects bounce off of one another perfectly. We use Billiards as an example but its not a perfect example
Elastic
When the force of impact on an object is extended in time, does the impulse increase or decrease?
Increase
p=m*?
Velocity
A large truck collides with a small bicycle.
Which vehicle experiences the greatest force of impact?
Both have the same
A car possesses 20,000 kg*m/s. What would be the car's new momentum if the velocity doubled?
40,000 kg*m/s
True or false: energy is not conserved in inelastic collisions
True
Daily Triple
Bonus only. What is the equation for impulse
True/False
An object's momentum is indirectly proportional to an object's velocity (as one increases, the other decreases)
False
A large truck collides with a small bicycle.
Which vehicle experiences the largest change in momentum?
Both change momentum the SAME amount! (one increases momentum, other decreases by the same)
Car A crashes into a cement wall at 120 m/s, Car B crashes into a haystack at a 120 m/s. On which car is the force of impact the smallest and which car is the force of impact the greatest?
Car A greatest
Car B smallest
Two cars crashing would be an example of what kind of collision
inelastic.
What is the definition of impulse
Change in momentum
To increase the momentum of an object the ____________ and/or ________________ must be increased.
mass and/or velocity
A large truck collides with a small bicycle.
Which vehicle experiences the largest change in velocity?
The bicycle
Bicycle's mass is smaller so change in velocity must be greater
A 60 kg quarterback is running at 0.4 m/s down the field. A 90 kg halfback is running at 0.3 m/s down the field.
Which player has the most momentum?
The halfback
Why would a small bullet possibly have more energy than a truck parked on the side of the road?
Bullet has velocity.
Egg Drop- What variable are you changing in the impulse to decrease the amount of Force. Are you making this variable bigger or smaller?
Time. Bigger