Momentum and Impulse
Conservation of Momentum
Wave Characteristics
Wave Behaviors
Challenges (EXTRA POINTS)
100
What is the equation for momentum?
P=mv
100
What does the law of conservation of momentum state?
The momentum of a closed system never changes.
OR
The sum of momenta before and event will equal to the momenta after the event.
100
A wave length is measured from
crest to crest or trough to trough
OR
one cycle
100
An echo is an example of what wave behavior where waves bounce of boundaries?
What is a reflection?
100
Which object has more momentum?
A 20 kg ball rolling at 10 m/s
OR a 10 kg ball rolling at 20 m/s
They both have the same momentum.
200
A 5kg bowling is rolling on the floor at 2m/s, what is the momentum?
10 kgm/s
200
A moving object collides with an object at rest. What will happen's to the moving objects speed upon impact?
It decreases
200
How would you measure the amplitude?
From crest to equilibrium.
200
Refraction is a wave behavior where waves change speed and ___________when they encounter a boundary.
What is bend.
(Examples include glasses and lenses)
200
A firecracker is sitting on the ground at rest. After the fireworks explodes, what is the sum of momenta of all of the pieces flying off.
What is ZERO?
300
The impulse momentum theorem states that....
the impulse acted on an object is equal to its change in momentum
300
What type of collision occurs when two objects stick together?
an inelastic collision
300
A wave has a period of 10 seconds. What is its frequency?
What is 1/10 or 0.1 Hz
300
Waves in a pool are shown from above. What wave behavior is evident?
What is diffraction?
300
If it wasn't for this wave behavior, Mr. Benson would not be able to see you today. (Give a reason why)
Students must describe
400
A student kicks a ball with a force of 100 Newtons. The ball is in contact with the foot for 0.5 seconds. What is the change in momentum of the ball?
50 kgm/s
400
A bug smacks into a windshield of a car. Which object experiences a change in momentum? The bug or the Windshield?
both experience the same change in momentum
400
The length from a to A to G is 15 meters. What is the wavelength of the wave?
10 meters
400
What is a mechanical wave? (What does it carry, how does it propagate?)
A disturbance that carries ENERGY through a physical MEDIUM.
400
Visually demonstrate a longitudinal wave and a transverse wave.
Student must demonstrate.
500
A 10 kg toy rocket is at rest on the ground. An impulse of 500 Ns is applied to the rocket when it takes off. What is the rocket's final velocity?
50 m/s
500
An toy car traveling at 8 m/s collides with another car at rest. They both have a mass of 2kg. If the cars stick together on impact, what will be their final velocity?
4 m/s
500
A water wave has a wavelength of 12 meters and a period of 3 seconds. What is the speed of the wave?
What is 4 m/s meters per second?
500
This image below describes what wave behavior effect?
What is the Doppler Effect
500
Create your own test question (must be original).400 points for a so-so question. 800 points for a great question.
Any student who can answer these questions gets half points for that question!