Kepler's Laws
Newton's Laws
GRAAAAAVITY
Energy
Motion
FINAL Jeopardy
100
Kepler's 1st Law says that:
Orbits are elliptical
100
A mass wont stop unless acted on by an unbalanced force because of this property.
What is inertia
100
Anything that has this has gravity.
What is mass
100
The formula for the energy of motion.
Kinetic energy = 1/2 mv2
100
Assume that positive values imply the forward direction.
The object's position v. time graph has a positive Y-Value at t=0s.
What does this tell you?
The object is starting IN FRONT of the origin.
200
If a planet has an orbital velocity of v at the perihelion, then its orbital velocity will be greater than/less than v at the aphelion. (Choose one)
LESS THAN (the planet will be traveling slower when it is further away from the star)
200
These are TWO ways to increase the acceleration of an object.
What are
1) Increase the force on the object, &
2) Decrease the mass of the object
(Newton's 2nd Law)
200
These are the determining factors of the gravitational attraction between two objects.
What are mass and distance
200
When you pull back on a rubber band, it now has this (specifically).
What is elastic potential energy
200
Assume that positive values imply the rightward direction.
The object's position v. time graph has a negative slope.
Briefly describe the movement of the object.
The object is moving leftward (negative velocity)!
300
An orbit with an eccentricity of 0.99 is very elliptical OR circular (choose one).
Elliptical!
300
A 1,000kg car traveling at 5m/s slams into a 0.5kg stuffed teddy bear that is at rest. At one point, the car exerts 100N of force onto the teddy bear. What amount of force does the bear exert back onto the car?
What is 100N? (Newton's 3rd Law)
300
______________ will change depending on where you are in the universe, but _______________ will remain constant regardless of where you go.
What are weight and mass
300
The formula for the stored energy that an object has due to its position above the ground.
Potential Energy = mgh
300
Calculate the average velocity of the object on its trip.
0m/s
400
Calculate the eccentricity of orbit of a planet with a perihelion = 1 A.U. and an aphelion = 3 A.U.
e = 0.5
400
A car with a mass of 1000kg accelerates at 2m/s2 rightward. The friction force acting on the car has a magnitude of 200N. What is the net force acting on the car? Be specific!
What is 1,800N rightward! (+1,800N)
400
On Earth, the mass of an object is 100kg. What is the weight of the object? Use the standard unit of measure.
980 kg m/s2 = 980 N
400
Energy cannot be _______________ nor ______________.
What are created, destroyed
400
Calculate the average speed of the object on its trip.
1.5m/s
400
YOU MAY WAGER FROM 0 TO YOUR CURRENT AMOUNT OF POINTS! ENTER YOUR WAGER NOW!
YOU MAY WAGER FROM 0 TO YOUR CURRENT AMOUNT OF POINTS! ENTER YOUR WAGER NOW!
500
While exploring a distant solar system, you find a new planet. It has an average orbital radius of 6 A.U. The only other planet that you have observed takes 1 Earth year to orbit, and has an average orbital radius of 2 A.U.
How long, in Earth years, does it take this new planet to orbit the star? Round to the tenths place.
What is 5.2 Earth years
(Kepler's 3rd Law)
500
A boat is traveling at 100kph forward, and the pilot shuts down the engine. In what direction is the boat still accelerating?
What is backward!
500
Object 1 and Object 2 are at a distance of 1 million km from each other. Then, Object 1 moves away to a distance of 10 million km from each other.
By what factor does gravitational attraction change?
Gravitational attraction DECREASES by 100 times.
500
A baseball is mid-flight towards another player. List ALL forms of energy happening that include the ball.
What are kinetic, potential, thermal
Also accepted, but not required: Sound
500
ALL PARTS MUST BE CORRECT FOR POINTS!
What is the displacement from t=0s to t=5s?
What is the average speed over the whole trip?
Total Displacement from 0s to 5s: 0m
Average Speed over the whole trip: 1.5m/s
500
A 500kg roller coaster car climbs to the top of a frictionless track. At the bottom of the track, the coaster car is traveling at 15m/s. How tall was the hill?
What is 11.5m