Circles
A line from the center of a circle to its edge
Radius
Units of time
Seconds
Where is gravity present in the universe?
Everywhere
Isolate "d" from the equation for velocity
v= d/t
d=v * t
The variable that does not change in an experiment.
Control Variable
The term "Centripetal" means...
Towards the center
Units of all forces
Newtons (or kg *m/s^2)
What causes something to feel a force of gravity?
The object must have mass
Isolate r from the equation for the centripetal acceleration:
a= v^2 / r
r= v^2 / a
The variable that you choose to change in an experiment.
Independent variable
The force that causes circular motion
Centripetal Force
Units for acceleration
Meters per second squared (including dircetion)
What happens to the force of gravity experienced when the mass of an object is decreased?
It decreases (direct relationship)
Isolate m1 from the equation for the force of gravity. Parenthesis are very important for your answer.
Force = (G * mass 1 * mass 2)/d^2
m1= (F * d^2 ) / (G * m2)
The variable that you are measuring in an experiment and what axis it is located on in a graph
Dependent Variable on the Y-axis
The direction of the acceleration in circular motion
Towards the center
Units for Velocity
Meters per second (including direction)
When drawing a diagram, where would the force of gravity be found?
Going from the center object to the orbiting object and from the orbiting object to the center object (two arrows)
Isolate "v" from the equation for centripetal force.
F= m * v^2 / r
v = Square root( r * F / m)
Describe Newton's 3rd Law
If the centripetal force is removed, what direction will the object travel?
In the direction of the tangential velocity
Explain why the units of acceleration are m/s^2
Acceleration is the change in velocity divided by time. The velocity is m/s and when divided by the units for time, a second, the result is m/s^2
(A negatively sloping curve)
Isolate "d" from the equation for the gravitational force.
Force = (G * mass 1 * mass 2)/d^2
d= square root (G * mass 1 * mass 2 /F)
Draw the orbital path of the moon and describe why it exhibits this motion.
The moon is orbiting the earth while also feeling a gravitational force from the sun. This results in small ellipticals around the earth while creating a larger revolution around the sun.