Velocity
What is the velocity formula?
v = d/t
What is the acceleration formula?
a = the change in v / the change in t
What is a force?
A push or pull
Newton's three laws are known as the...
Laws of Motion
Kepler's Laws are known as the..
Laws of Planetary Motion
Velocity refers to the...
Speed of an object in a particular direction
Acceleration refers to the ......
Rate at which an object changes its velocity.
What kind of force causes a change in motion?
Unbalanced force
What is Newton's Second Law of Motion?
F = ma
Eccentricity describes...
The flatness (circular or elongated) of the orbit.
What type of slope represents an object moving away from start at a constant rate?
Positive slope
Velocity-time graphs
An object has a force of 50N pushing it to the right, a force pushing it 45N left, 5N is pulling it down and 2N is pushing it up. What is the net force?
5N, Right
3N, Down
Define the term inertia.
Inertia is the tendency of an object to resist a change in motion.
Kepler noticed there was a change in velocity during a planet's orbit. Since there was a change in velocity, this must have meant the planet was...
Speeding up and slowing down (accelerating & decelerating)
A mouse's starting position was 10m. It stopped at 15m. It traveled this distance in 5 seconds. What was the mouse's velocity?
(15 - 10)/(5-0) = 5/5 = 1m/s
A zero slope with a slope greater than 0 is an object that is ....
traveling at a constant velocity (rate)
Increasing the mass of an object will...
increase the gravitational pull.
How does the mass of an object affect acceleration?
As mass increases, acceleration decreases.
When the planet is closest to the Sun, it is known as...
perihelion
What are the two ways you can tell when an object is moving the fastest on a position-time graph? (graphing and calculation)
When it has the steepest angle (graph)
When it has the highest velocity value (slope) [calculation]
A car was traveling at 10m/s for 5 seconds. Then it accelerated to 60m/s for 10 seconds. What was the car's acceleration?
(60-10)/(10-5) = 50/5 = 10m/s^2
The gravitational attraction on Saturn is 11.19N and 25.9N on Jupiter. Which planet would you jump farther on and why?
You would jump farther on Saturn because there is a weaker gravitational pull that is pulling you towards the center of the planet.
What is the acceleration of a 70kg object that exerts a 294N force?
F = ma
294 = 70a
294/70 = 4.2m/s^2
a = 4.2m/s^2
What is Kepler's Third Law formula?
p^2 = a^3
p = period
a = semi major axis (can also be the variable d)