Concepts
What is p stands for
Momentum
The momentum of an object depends upon the objects ______________ and _________________.
mass and velocity
The product of force and the time over which force is applied.
Impulse
The event in which two or more bodies exert forces on each other in about a relatively short time is called...
collision
The Law of conservation of _____________ states:
when two objects interacting with one another remains constant regardless of the nature of the forces between the objects
Momentum
What is the formula for momentum?
p = m x v
Which has the greater momentum?
- An 18 wheeler tractor at rest
- A sports car driving on the highway
- An elephant standing in the field?
A sports car driving on the highway
The impulse-momentum theorem states that the impulse experienced by the object is _________ to the change of momentum.
equal
An __________ collision in which the objects stick together after collision.
Inelastic
When two objects interact in an isolated system the momentum of each object is ____________________.
conserved
What is the units for momentum?
kg m/s
Which has the least momentum?
An ant walking along the ground
An elephant running
An average mass person jogging
An ant walking along the ground
A force of 300 N is exerted on a baseball by the bat for 1s. What is the impulse of the baseball?
300 N s
An ____________ collision is if the objects bounce apart instead of sticking together.
Elastic
A constant force of 4.5 N acts on a 7.2 kg objects for 10 s. What is the change in the object's velocity?
6.25 m/s
What is the units for impulse?
N s
A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is the mass?
144 kg
A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s . Calculate the impulse on the ball.
6 N s
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together. What type of collision did he observe?
Inelastic Collision
A constant 6.0 N force acts for 4.0 s on a 12 kg object. What is the objects change in velocity?
2 m/s
What is the equation/formula for IMPULSE- MOMENTUM Theorem?
F x t = m x change in v
What is the momentum of 7o kg runner who covers 400 m in 50 s?
560 kg m/s
A car hits a brick wall which results in a change of momentum of 35,000 Ns. If this impact lasted 5.8 seconds, what force did the car experience as a results of this collision?
6,034.48 N
Which of the following situations is an example of a mostly elastic collision?
Two billiard balls collide and bounce off each other.
A 15 kg dog jumps out of a 40 kg canoe. If the dog's velocity is 1.2 m/s, what is the velocity of the canoe?
0.45 m/s