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- 1. Multiple Choice
A ball is moving in a circle, counterclockwise.
Which vector arrow represents the acceleration of the ball?
ABCD - 2. Multiple Choice
A ball is moving in a circle, counterclockwise.
Which vector arrow represents the velocity of the ball?
ABCD - 3. Multiple Choice
What is the centripetal force of a .2 kg yoyo spun in a circle with a radius of .7 meters at a velocity of 3 m/s?
2.05 N
2.57 N
2.90 N
3.13 N
- 4. Multiple ChoiceTwo objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?9 N
18 N
72 N
144 N
- 5. Multiple ChoiceTwo objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if one of the masses were doubled?9 N
18 N
72 N
144 N
- 6. Multiple Choice
What is Kepler's 1st law?
The shape of a planet's orbit is an ellipse
The plants move faster in their orbit when they are closer to the sun and slower when they are further from the sun
The farther a planet is from the sun the slower the orbit
(T2 = d3)
- 7. Multiple Choice
Which of the following changes would INCREASE the magnitude of gravitational force?
Select all that apply!
Greater Mass
Lesser Mass
Shorter Distance
Further Distance
- 8. Multiple Choice
A planet moves __________ when it is farthest from the sun.
fasterslower - 9. Multiple Choice
Which description best describes the velocity of an object in uniform circular motion?
It changes magnitude and is tangent to the circle.
It constantly changes magnitude and direction.
It changes direction and is tangent to the circle.
It changes magnitude and is towards the center of the circle.
- 10. Multiple Choice
Which of the following best describes CENTRIFUGAL force?
It acts towards the center of the circle.
It acts away from the center of the circle.
It does not exist.
- 11. Multiple Choice
A 12.0 g rubber ball on the end of a 0.75 m string is swung in a horizontal circle. It travels at 3.4 m/s.
What is the centripetal acceleration of the ball?
- 12. Multiple Choice
What is at one focus of a planet's orbit?
Planet
Sun
Comet
Moon
- 13. Multiple Choice
Which of the following Forces is an example of a Contact Force?
Friction
Gravitational
Electric
Magnetic
- 14. Multiple Choice
What is the term for a force that, like gravity, acts on an object at a distance?
Long-distance
Extending
Field
Protracting
- 15. Multiple Choice
During which month is the earth moving the slowest around the sun?
JulyMarchJanuarySeptember - 16. Multiple ChoiceDuring what month is the earth moving the fastest around the sun?JulyMarchJanuarySeptember
- 17. Multiple Choice
Neptune is 30 times further away from the Sun than Earth is.
Find Neptune's orbital period in terms of years.
164 years
84 years
30 years
97 years
- 18. Multiple Choice
Two bowling balls each have a mass of 6.8 kg. The balls are 0.218 m apart.
What is the gravitational force between the two bowling balls?
G = 6.67 x 10-11
1 N
- 19. Multiple ChoiceThe force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?50 kg and 490 N100 kg and 490 N50 kg and 980 N100 kg and 980 N
- 20. Multiple Choice
BONUS: Which Astronomer/Scientist did Kepler work with?
Isaac Newton
Albert Einstein
Tycho Brahe
Galileo Galilei
Giovanni Cassini
- Answer choicesTagsAnswer choicesTags