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- 1. Multiple Choice
Newton's Third Law of Motion states that forces
always act in equal or opposite pairs
equal mass times velocity
act on an object to move it or to stop it.
- 2. Multiple Choice
What are forces exerted by two objects on each other called?
action-reaction force pairs
gravity force pairs
friction force pairs
- 3. Multiple Choice
What direction does the ground push on you when you jump?
The ground doesn't push on you.
down
up
- 4. Multiple Choice
What direction must a boat crew move the oars to move the boat forward?
forward and backward
forward
backward
- 5. Multiple Choice
If you push a skateboard with a force of 8 N and your mass is 80 kg, what is the force that the skateboard exerts on you?
75 N
8 N
7N
10 N
- 6. Multiple ChoiceA bus hits a bug and the bug splatters on the windshield, which force is greater?The BusThe BugThey're the sameGravity acting on the bus
- 7. Multiple ChoiceA person steps out of the boat and onto the dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?For every action there is an equal and opposite reaction.Every mass exerts a force on every other mass.An object at rest tends to stay at rest.Friction opposes the motion of an object.
- 8. Multiple Choice
If a small compact car collides with a larger semi-truck. Which vehicle experiences more force?
the car
the truck
neither, the forces are equal
there is no correct answer here
- 9. Multiple Choice
If a large semi truck collides with a smaller compact car, which vehicle experiences more acceleration?
the semi
the car
neither, accelerations are equal
there is no correct answer here
- 10. Multiple Choice
When gravity pulls a skydiver towards the Earth, the reaction force is...
The skydiver pulling the Earth.
Air resistance
The weight of the skydiver
Drag
- 11. Multiple Choice
What states that "every object in the universe attracts every other object"?
Law of Universal Gravitation
Newton's First Law of Motion
Kepler's Law
Inertia & gravity
- 12. Multiple Choice
The law of universal gravitation is credited to whom?
Einstein
Galileo
Darwin
Newton
- 13. Multiple Choice
Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?
F/3
F/2
F/6
F/9
- 14. Multiple ChoiceTwo factors effecting the magnitude of the force of gravity between 2 objects are...mass and distancemass and matterdistance and weightweight and mass
- 15. Multiple ChoiceForce of gravity is directly proportional toMassWeightDistanceTime
- 16. Multiple ChoiceIf Earth's mass was cut in half, what would happen to your mass?increase because gravitational force increasesdecrease because gravitational force decreasesdecrease because gravitational force increasesnothing, mass is not affected by gravitational force
- 17. Multiple ChoiceDouble the mass of an object, what happens to the force of attraction?4 times stronger gravity force4 times weaker gravity force2 times weaker gravity force2 times stronger gravity force
- 18. Multiple ChoiceForce of gravity is inversely proportional toMassWeightDistanceTime
- 19. Multiple ChoiceAs distance separating the objects increases the forceincreasesdecreasesstays the same
- 20. Multiple ChoiceGravity attracts all objects towards one another.FalseTrueIt depends
- 21. Multiple ChoiceIf Earth's mass was cut in half, what would happen to your weight?Increase because gravitational force increasesdecrease because gravitational force decreasesdecrease because gravitational force increasesnothing, weight is not affected by gravitational force
- 22. Multiple ChoiceThe force of gravity acting on an object is the object's ______.massmatterweightfriction
- 23. Multiple ChoiceWhich of the following is Newton's Law on Gravitation?F=Gm1m2/rF = Gm1m2/r2F = Gm1m2/2rF = m1m2/2r
- 24. Multiple Choice
The number 6.67 x 10 -11 N* m2 / kg2 is called the
universal speed constant
centripetal force
universal gravitational constant
Earth's gravitational constant
- 25. Multiple ChoiceWhich of the following never changes no matter where in the universe?weightforcemasspounds
- 26. Multiple ChoiceA moon is located at 1 unit out from the planet it orbits. If that moon was orbiting at 2 units out from the planet, how much would the gravitational force on the moon be compared to its distance at 1 unit?1/41/62x as much4 times as much
- 27. Multiple Choice
Two masses m1 and m2 are separated by a distance R and gravitaional force between them is F. If the distance R is doubled the force will now be _
4F
2F
F/2
8F
F/4
- 28. Multiple Choice
Two masses m1 and m2 are separated by a distance R and gravitaional force between them is F. If m1 is doubled and m2 is halved the new Force will be
2F
F
F/2
4F
F/4
- 29. Multiple Choice
Two masses m1 and m2 are separated by a distance R and gravitaional force between them is F. If the distance R is reduced to R/2 the force will now be
8F
2F
F/4
F/2
4F
- 30. Multiple Choice
What did Kepler discover about planets and their orbital speed?
Planets closest to the Sun will orbit with the fastest orbital speed.
Planets with the greatest mass will orbit the Sun with the fastest orbital speed.
Planets furthest from the Sun will orbit with the fastest orbital speed.
Planets with the least mass will orbit the Sun with the fastest orbital speed.
- 31. Multiple ChoiceA planet moves __________ when it is farthest from the sun.fasterslower
- 32. Multiple Choice
What is a high tide?
Ocean water pulled TOWARD the moon where Earth is CLOSEST to the moon
Ocean water pulled AWAY from the moon where Earth is FARTHEST to the moon
Ocean water pulled AWAY from the moon where Earth is CLOSEST to the moon
- 33. Multiple ChoiceThe bulge of water on the side of the Earth closest to the moon produces ___________.high tidelow tideneap tidespring tide
- 34. Multiple ChoiceWhich body has the greater effect on Earth's tides?SunSaturnMoonVenus
- 35. Multiple ChoiceThe Moon has a greater influence on Earth tides than the Sun because...it is smaller than the Sunit revolves around the Earthit is closer to the Earth
- 36. Multiple ChoiceThe concept of Inertia is found in the Laws of...MotionRelativityThermodynamicsEnergy
- 37. Multiple ChoiceThe concept of Spacetime is found in the Laws of...MotionRelativityThermodynamicsEnergy
- 38. Multiple Choice
Who theorized the existence and cause of Gravitational Waves?
Isaac Newton
Johannes Kepler
Robert Hooke
Albert Einstein
- 39. Multiple Choice
The minimum speed needed to a free object to escape the gravitational influence of a massive body
escape veolocity
accrection disk
gravitation
whirlpool
- 40. Multiple Choice
The more mass an object, the more it bends time and space
true
false
- Answer choicesTagsAnswer choicesTags