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- 1. Multiple ChoiceCentripetal acceleration acts ___________ of the circular path.towards the centeralong the circumferenceaway from the centerperpendicular to the plane
- 2. Multiple ChoiceCentripetal acceleration is GREATER when...the radius of the circular motion is decreasedthe radius of the circular motion is increasedthe linear speed is decreased
- 3. Multiple ChoiceIn circular motion, the centripetal force is always directed towards...The centerThe tangentAway from the centerAway from the tangent
- 4. Multiple ChoiceWhat is the difference between centripetal and centrifugal forces?Centripetal is towards center while centrifugal is away from the center.Centrifugal is towards center while centripetal is away from the center.Neither of the above is correct
- 5. Multiple Choice
Which represents the acceleration of the ball?ABCD - 6. Multiple ChoiceWhich of the following depict the velocity of the bowling ball?ABCD
- 7. Multiple ChoiceIf the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)9.4 m/s6.8 m/s11.7 m/s3.5 m/s
- 8. Multiple ChoiceWhy do objects experience centripetal acceleration?Because they are speeding up as they move in a circleBecause they are constantly changing direction and the net change is directed inwardBecause they are constantly changing both speed and directionBecause when you have 100 people pedaling, you can speed up more easily.
- 9. Multiple ChoiceWhat is the force that causes centripetal acceleration when a car goes around a curve?FrictionGravityNormalTension
- 10. Multiple ChoiceCalculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.10 N20 N30 N40 N
- 11. Multiple ChoiceCentripetal force is...the resultant force acting on a body moving at constant speed in a circlethe outwards force acting on a body moving at constant speed in a circle
- 12. Multiple ChoiceThe velocity is always _____ to the line of a circle.outwardstowards the centertangentfaster
- 13. Multiple ChoiceA ball on a string is travelling in circular motion. Which vector represents the centripetal force?The green vector because it points towards the center of the circular pathThe blue vector because it shows the direction of the object's inertiaThe green vector because it shows the path of the ballThe blue vector because this is the way the ball will move when it is released.
- 14. Multiple ChoiceCalculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.10 N20 N30 N40 N
- 15. Multiple ChoiceWhat object experiences uniform circular motion?A car speeding up as it turns leftA car traveling around a roundabout at a constant speedA car slowing down as it crests a tall hillA car traveling down the road at a constant speed
- 16. Multiple ChoiceWhat is the difference between centripetal and centrifugal forces?Centripetal is towards center while centrifugal is away from the center.Centrifugal is towards center while centripetal is away from the center.Both are correctNone of the above are correct
- 17. Multiple ChoiceWhat relationship exists between the radius of a circle and the centripetal acceleration?directinverseexponentialinverse squared
- 18. Multiple ChoiceWhat is the relationship between centripetal force and the mass of an object?directinverseexponentialinverse squared
- 19. Multiple ChoiceCentripetal acceleration always pointsin the direction of the object's motionin the opposite direction of the object's motiontowards the center of the circletowards the outside of the circle
- 20. Multiple Choice
As the car goes around the curve, the centripetal force is directed--
toward the center of the circular curve
away from the center of the circular curve
tangent to the curve in the direction of motion
tangent to the curve opposite the direction of motion
- 21. Multiple Choice
Which is true about centripetal force and centripetal acceleration?
The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force is always pointing outward
The centripetal acceleration is always pointing outward from the center of an orbit and the centripetal force is always pointing inward
The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center but in a totally different location
The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center and in the same exact location as the centripetal acceleration
- 22. 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
- 23. Multiple ChoiceCalculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.10 N20 N30 N40 N
- 24. Multiple ChoiceWhat is the difference between rotation and revolution?Rotation is around another object while revolution is around its own axis.Rotation is on its own axis while revolution is around another object.They are the sameRotation is faster
- 25. Multiple ChoiceWhat does RPM stand for?Speed of a straight linespeed of a circleRevolutions Per MinuteRotations Per MInute
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