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- 1. Multiple Choice
Centripetal force is an acceleration of an object moving in circular path whose direction is _________________________of the circular path and whose magnitude is equal to the square of the speed divided by the radius.
towards the tangent
towards the centre
towards the minimum point
towards the maximum point
- 2. Multiple Choice
Where is the net force when the rollercoaster is at the top of the loop?
Towards the sky
Towards the Right
Towards the left
Towards the center of the circle
- 3. Multiple Choice
In uniform circular motion, the magnitude of the _______________________of an object is constant but the __________ is continually changing.
speed, acceleration
speed, direction
acceleration, speed
acceleration, velocity
- 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 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
- 7. Multiple Choice
________________________ defined as the number of revolutions (cycles/rotations) completed in one second.
frequency
period
distance
centripetal acceleration
- 8. Multiple ChoiceWhich of the following is the unit for centripetal force?Jm/s2kg⋅m/sN
- 9. Multiple ChoiceThe time taken for one complete circuit is called the...PeriodFrequencyAngular velocity
- 10. Multiple ChoiceWhich represents the acceleration of the ball?ABCD
- 11. Multiple ChoiceWhich of the following depict the speed of the blowing ball?ABCD
- 12. 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
- 13. Multiple Choice
Why does an object experiencing uniform circular motion have an acceleration?
because it ir changing speed
because it is changing direction
because it is moving n a straight line
because it has mass
- 14. 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
- 15. Multiple Choice
In this diagram, what do the red arrows represent?
the acceleration vector
the velocity vector
the centripetal force vector
the force of gravity
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