Diagrams
Phrases & Vocab
Quick Facts
Applying Principles
Using Equations
100
Find the net force? Include direction.
1 N down.
100
Velocity is zero.
Rest.
100
When objects of the same size & shape but different mass are dropped, this is what happens.
They hit the ground at the same time.
100
A system's potential energy decreases by 20 J. How does its kinetic energy change?
Conservation of Energy.
Its kinetic energy increases by 20 J.
100
An object of mass 2 kg has an acceleration of 3 m/s2. What is the net force on the obejct?
Fnet = ma
Fnet = 6 N
200
Which wave has a higher frequency?
Wave 1.
200
Same temperature.
Thermal equilibrium.
200
When there is a temperature difference, thermal energy flows in this direction.
From high temperature to low temperature.
200
An asteroid crashes into a planet. Which feels more force, the asteroid or the planet?
Newton's 3rd Law.
Neither feels more force.
200
A wave that travels at 24 m/s has a frequency of 3 Hz. What is its wavelength?
v = λf
λ = 8 m
300
Which object is moving but has a net force of 0 N?
Object B.
300
Wave that can travel through a vacuum.
Electromagnetic waves.
300
This quantity is conserved before & after a collision.
Momentum
300
When the net force acting on object is zero, the object will do this.
Newton's 1st Law.
Move at constant velocity or remain at rest.
300
An object beginning at rest travels for 4 s while accelerating at 9 m/s2. How far did the object travel?
Δx = viΔt + ½aΔt2
Δx = 72 m
400
Calculate the current across the 6 Ω resistor.
10 A.
400
"Average molecular motion" corresponds to this physical quantity.
Temperature
400
The speed of sound is greatest in this state of matter.
Solid
400
When a wave source moves towards you, its frequency does this.
The Doppler Effect.
The frequency increases.
400
An object that has a mass of 4 kg has 32 J of kinetic energy. How fast is the object moving?
KE = ½mv2
v = 4 m/s
500
Going from medium C to medium D, what happened to the speed of light?
The speed of light increased.
500
Acceleration is zero.
Constant velocity, equilibrium, or net force is zero.
500
Creating by moving electric charges or a current carrying wire.
Magnetic field.
500
What is the difference between a dangerous crash & a safe stop?
Impulse-Momentum Theorem.
The amount of time that it takes to stop.
500
The distance between two masses doubles. What happens to the force between them?
Fg = Gm1m2/d2 → Fg ~ m1m2/d2
Fg ~ 1/4 so the force is quartered.