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- 1. Multiple ChoiceTwo factors effecting the magnitude of the force of gravity between 2 objects are...mass and distancemass and matterdistance and weightweight and mass
- 2. Multiple ChoiceForce of gravity is directly proportional toMassWeightDistanceTime
- 3. Multiple ChoiceIf I double the distance between two objects, what happens to their gravitational Force?4x bigger4x smaller2x bigger2x smaller
- 4. Multiple ChoiceIf I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?DoublesQuadruplesCut in Half4x Smaller
- 5. Multiple ChoiceWhat happens to Gravitational force if I double both of the masses but don't change their distance?doubleshalf as big4x bigger4x smaller
- 6. 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?91872144 - 7. Multiple Choice
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.moresamedosen't matterless - 8. Multiple ChoiceTwo 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/3F/2F/6F/9
- 9. Multiple Choice
If the distance between 2 masses is increased then the force of gravitation between them will...
increase
decrease
stay the same
- 10. Multiple ChoiceWhat is gravitational force?a force that attracts any objecta force that pushes any objecta force that shrinks any objecta force that enlarges anyobject
- 11. Multiple Choice
A man who weighs 1000N on the surface of the earth will weigh how much at twice the distance in the atmosphere.
500 N
250 N
2000 N
4000N
- 12. Multiple ChoiceForce of gravity is inversely proportional toMassWeightDistanceTime
- 13. 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
- 14. Multiple Choice
Which configuration will result in the greatest gravitational force?
small masses far apart
large masses far apart
small masses close together
large masses close together
- 15. 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
- 16. Multiple Choice
The amount of matter in an object
mass
weight
inertia
gravity
- 17. Multiple ChoiceThe moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.gravityfrictiona strong forceelectromagnetic force
- 18. Multiple ChoiceWhat states that "every object in the universe attracts every other object"?Law of Universal GravitationNewton's First Law of MotionMy motherInertia & gravity
- 19. Multiple Choice
Calculate the force of gravity (F) between two objects whose masses are m1 = 100 kg and m2 = 1000 kg if they are separared by a distance of d = 500 m.
2.67 * 10-11 N
0.4 N
6.67 * 10-11 N
1.3 * 10-8 N
- 20. Multiple Choice
The reason why ocean tides happen is
Electrical forces between the sun and the moon
gravitational forces between the Earth and the moon.
Magnetic forces between the Earth and the moon
Motion of the moon around the earth
- 21. Multiple ChoiceWhich of the following is Newton's Law on Gravitation?F=Gm1m2/rF = Gm1m2/r2F = Gm1m2/2rF = m1m2/2r
- 22. Multiple ChoiceWhy don't satellites get closer to the Earth even though the Earth pulls on them?The pull from the sun cancels their movementThe pull from the moon cancels their movementThey are out of Earth's gravitational fieldThey fall at the same rate that the Earth curves away from them
- 23. Multiple ChoiceThe units of velocity arekgmm/sN
- 24. Multiple ChoiceWhich system has the greater gravitational attraction between the two objects (if any)?System ASystem BSame gravitational attraction fro System A and System B
- 25. Multiple Choice
Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.
2.96x10-7N
3.00x10-9N
2.22x10-9N
2.23x10-8N
- 26. 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?91872144 - 27. Multiple Choice
Two spherical objects have masses of 8000 kg and 1500 kg. Their centers are separated by a distance of 1.5 m. Find the gravitational attraction between them
5.4 X 10-4 N
1.2 X 107 N
3.6 X 10-4 N
5.33 N
- 28. Multiple ChoiceA particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?ABCD
- 29. Multiple ChoiceWhat is the direction of the velocity at point B, if the ball is revolving clockwise?uprightdownleft
- 30. Multiple ChoiceThe velocity is always _____ to the line of a circle.outwardstowards the centertangentfaster
- 31. Multiple Choice
An object is moving with uniform speed in a horizontal, counterclockwise circle. At location D, which way does the centripetal force vector point?
Left
Right
Up
Down
- 32. Multiple Choice
If an object is spinning around on a string and the string was suddenly cut, the object would move in a
curved path
straight line
- 33. Multiple ChoiceWhat happens to the centripetal force exerted on an object if you triple the velocity?it increases to 3Xit decreases to 6Xit increases to 6Xit increases to 9X
- 34. Multiple ChoiceWhen an object is in circular motion it is constantly changing its velocity.TrueFalse
- 35. Multiple ChoiceIs it possible for an object moving with a constant speed to accelerate? Explain.
A) No, if the speed is constant then the acceleration is equal to zero. B) No, an object can accelerate only if there is a net force acting on it.
C) Yes, although the speed is constant, the direction of the velocity can be changing.
D) Yes, if an object is moving it can experience accelerationABCD - 36. Multiple Choice
An object is moving in a circle at constant speed. From this, you know that there
is no net force acting on the object
are two balanced forces acting
is an unbalanced force acting on the object
must be more than two forces acting on the object
- 37. Multiple Choice
3.0 N
6.0 N
9.0 N
1.5 N
- 38. Multiple Choice
If mass of a body moving in a circle with a uniform speed is doubled, its centripetal force becomes:
Twice
Three times
Four times
half
- 39. Multiple Choice
In uniform circular motion which of the following physical quantities remains constant?
velocity
speed
acceleration
all of the above
- 40. Multiple Choice
A car travels in a circle at constant speed. Which of the following is TRUE about the net force on the car?
zero because the car is not accelerating.
directed towards the direction of travel
directed towards the center of the circle.
none of the above.
- 41. Fill in the Blank
A 20,000 N car travelling at 12 m/s rounds a curve of radius 125 m. Its The centripetal force acting on the car is
- 42. Multiple ChoiceWhich statement is true about an object that is traveling in uniform circular motion?The speed of the object varies.The net force on the object is directed toward the center of the circular path.The direction of the object's velocity is constant.The net force on the object is directed away from the center of the circular path.
- 43. Multiple Choice
The greater the mass of two objects, the _____________ the gravitational force between them.
greater
weaker
less
- 44. Multiple Choice
Gravitational force ___________________ rapidly as the distance between the objects increases.
decreases
increases
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