Unit A
The difference between vector and scalar quantities
Direction
Fg is directly proportional to...
Mass
The direction centripetal force is always in.
Towards the centre of the circle
v = fλ
The difference between Cartesian and Navigator vector directions.
Cartesian uses only numbers, while navigator uses direction as well
Fg is directly inversely proportional to...
The reason mechanical energy changes in a closed, frictionless and straight system.
Mechanical energy does not change in a closed and frictionless system.
The formula for Hooke's Law
F = -kx
If a distance-time graph has a curve that means...
It is moving with constant acceleration.
When you are accelerating up an elevator your body feels this way.
Your body feels lighter.
The definitions of period and frequency
Period (T) is the amount of seconds it take for one revolution. (s)
Frequency (f) is the amount of revolutions it does in one second. (Hz)
The term used for the longest x distance in a wave
Amplitude
The velocity final and initial will be the same but in different directions.
If an object goes under uniform motion this is its Fnet.
Fnet = 0
The largest formula for centripetal force
Fc = m • 4π2r /T2
The position where the pendulum has max velocity
At equilibrium
In vector addition and components you must never...
Name Newton's first three Laws
"1. An object at rest/in motion remains at rest/in motion unless acted upon by an unbalanced force"
2. Fnet = ma
"3. If object A exerts a force on object B, then object B exerts a force on A that is equal in magnitude and opposite in direction"
Name all 3 of Kepler's Law's
"1. All planets in the solar system have an elliptical orbit with the sun at one focus"
"2. A line drawn from the sun to a planet sweeps out equal areas in equal times."
"3. The ratio of the planets orbital period squared to its orbital radius cubed is a constant. All objects orbiting the same focus (eg. planets, the sun) have the same constant."
Using the formula, T = 2π√m/k, isolate for mass.
m = T2 • k/4 • π2