What type(s) of collision that KE is not conserved?
Inelastic and Perfectly Inelastic Collision
A 0.25kg cart moving at 0.4m/s. How much momentum the cart get?
0.1 kg-m/s
Mary noticed a collision outside the coffee shop where two cars collided and stuck together. What type of collision did Mary observe?
Perfectly Inelastic Collision
KE converted into what in INELASTIC COLLISION?
Sound, thermal energy, and can change shape.
The momentum conserved in which collision?
Inelastic, elastic, and perfectly inelastic
What type of a collision where momentum is conserved, KE is not conserved, and the objects bounce off each other?
Inelastic Collision
After the two American football players collide they will stick together or bounce away?
Stick together
What type of collision of this picture?
Perfectly Inelastic Collision.
If a 70kg man and a 40kg boy are both running at the same velocity which is 5m/s, who has more momentum?
The 70kg man
Momentum is defined as? (formula)
Mass times the velocity.
What do we call it when two or more moving objects exert forces on each other for a short period of time?
Collision
This is formula of what?
Elastic Collision
What are the units for momentum?
kg*m/s
How fast dose a bowling ball has to travel to transfer 140kg*m/s of momentum to the pins if the ball has a mass of 4kg?
35 m/s
The law of conservation of momentum states what?
Momentum is conserved. p before is the same as p after.
Two cars collide, lock bumpers, and move together after the collision. What kind of collision is this?
Perfectly Inelastic Collision
What is the mass of an orange that’s moving at a speed of 3 m/s and has a momentum of 33.6kg*m/s?
11.2kg
What is the momentum of a motorcycle travelling at 30m/s if it has a mass of 800kg?
24000 kg*m/s
How can the effect of catching a slow, heavy object be the same as catching a fast, lightweight object?
They have the same momentum.
What is the momentum of a baseball that has a mass of 0.7kg and is thrown with a velocity of 15m/s?
10.5 kg*m/s
If 2 objects collide and stick together, what will happen to their velocities?
Velocities will decrease
If a skydiver hits the ground with a momentum of 868 kg*m/s and was travelling at a speed of 14 m/s before impact, how much mass does the skydiver has?
62kg
How many types of COLLISIONS?
3 types
Momentum is a what quantity?
Vector quantity