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- 1. Multiple Choice
A 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 - 2. Multiple ChoiceWhat is the direction of the velocity at point B, if the ball is revolving clockwise?uprightdownleft
- 3. Multiple ChoiceWhat is the direction of the acceleration at point B, if the ball is revolving clockwise?uprightdownleft
- 4. Multiple ChoiceThe velocity is always _____ to the line of a circle.outwardstowards the centertangentfaster
- 5. 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.
- 6. Multiple ChoiceYou swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?FrictionCentripetal ForceGravityInertia
- 7. Multiple Choice
A tennis ball on a string is spun clockwise around a circle. After the string breaks, which path will the tennis ball follow?
Path I
Path II
Path III
Path IV
- 8. Multiple Choice
The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle. Without it, the car would turn its wheels but would not move in a circle (as is the case on an icy surface).
friction force
centrifugal force
normal force
applied force
- 9. 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
- 10. Multiple Choice
The amount of time it takes for an object to return to the same position (complete one revolution) is its
tangential velocity
tangential acceleration
centripetal acceleration
period
- 11. Drop Down
(a) is how fast something moves and is always (b) in uniform circular motion. (c) is speed with (d) , which is always changing in uniform circular motion.
SpeedconstantVelocitydirection - 12. Multiple ChoiceWhere is the net force when the rollercoaster is at the top of the loop?Towards the skyTowards the RightTowards the leftTowards the ground
- 13. Multiple ChoiceWhich of the following increase the centripetal force?Increasing the radiusIncreasing the velocityDecreasing the massDecreasing the acceleration
- 14. Multiple Choice
The diagram shows a stone tied to the end of a length of string and is whirled round in a horizontal circle . What provides the centripetal force on the stone?
The weight of the string.
The friction in the string.
The tension in the string.
The air resistance from the surroundings.
- 15. Multiple Choice
A mass on a string rotates 10 times in 5 seconds. What is the period?
0.5 s
0.2 s
2.0 s
50 s
- Answer choicesTagsAnswer choicesTags