WorksheetsTOPIC 2_UNIFORM CIRCULAR MOTION
Total questions: 30
Worksheet time: 1hrs 20mins
What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?
5 m/s2
17.63 m/s2
10 m/s2
8.81 m/s2
A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?
At the instant shown in the diagram, the car's centripetal acceleration is directed-
toward E
toward N
toward W
clockwise
At the position shown in the diagram, which arrow indicates the direction the instantaneous (tangential) velocity of the cart?
A
B
C
D
An object moving is moving with uniform speed in a horizontal counterclockwise circle. At the location depicted, the centripetal force stops. Which path will the object follow?
A racecar is driving with a constant speed around a track (depicted). At what location will the car have the greater centripetal force acting on it?
A
C
D
F
A racecar is driving with a constant speed around a track (depicted). At what location will the car have the least centripetal force acting on it?
b
C
D
F
The motion of the Moon around the Earth is an example of ____________.
uniform action
projectile motion
rectilinear motion
circular motion
If velocity increases force will....
increase because they have a direct relationship
increase because they have a inverse relationship
decrease
both
Why should you reduce speed around a turn if the road is icy?
Because your car will travel in a straight line unless forced to do otherwise
Because the ice reduces the frictional force between the tires and the road.
Because a minimum amount of centripetal force is required to keep your car moving around the curve.
All of the above.
A car is rounding a bend as shown in the diagram. Which arrow correctly shows the direction of the cars velocity?
A
B
C
D
Which of the following pairs is not correct?
planets orbit around the sun = gravitational force
cars turning a curved road = frictional force
rotating stone attached to a string = tension force
cars turning a curved banked road = frictional force
What happens to the speed and velocity of an object moving in non-uniform circular motion?
constant speed, constant velocity
constant speed, changing velocity
changing speed, constant velocity
changing speed, changing velocity
Which of the followings statements is false about an object moving in uniform circular motion?
the object moving in UCM is accelerating due to its changing velocity
the object moving in UCM is changing its velocity due to its changing direction
the object moving in UCM has centripetal force that is directed inwards and centrifugal force that is outwards
the object moving in UCM is experiencing an outward sensation due to the object's inertia attempting to maintain its tangential path
Which of the following is an example of a centripetal force?
gravitational force
frictional force
normal force
magnetic force
tension force
Which of the following is not true about banking of roads?
banked roads are designed to help keep cars from slipping while turning
the entire centripetal force of the car turning in a banked road is supplied by the horizontal component of the normal force
there is no friction required for banked roads to keep the cars turning safely
if the curved road is , not banked, the centripetal force is supplied by frictional force and the normal force
