CHAPTER 6 TEST Circular Motion

What type of motion does a Formula 1 race car exhibit as it makes a turn?

• Linear motion

• Circular motion

• Projectile motion

• Oscillatory motion

What is rotational motion?

• Linear motion of an object

• Circular motion of an object about an axis of rotation

• Motion in a straight line

• Random motion of particles

What is the relationship between angular velocity (ω) and tangential velocity (v)?

• v = ω r

• v = Δs/Δt

• v = Δθ/r

• v = r/ω

What does the right-hand rule describe in the context of angular velocity?

• The direction of linear velocity

• The direction of angular velocity

• The speed of rotation

• The radius of rotation

If you swing an object slowly, it may rotate at less than one revolution per second. What would be the revolutions per second for an object that makes one revolution in five seconds? What would be its angular speed in radians per second?

What is the angular speed of a car tire with a radius of 0.300 m when the car travels at 15.0 m/s?

• 45 rad/s

• 50 rad/s

• 55 rad/s

• 60 rad/s

What is the angle in degrees between the hour hand and the minute hand of a clock showing 9:00 a.m.?

• 0°

• 90°

• 180°

• 360°

What is angular velocity?

• Angular velocity is the rate of change of the diameter of the circular path.

• Angular velocity is the rate of change of the angle subtended by the circular path.

• Angular velocity is the rate of change of the area of the circular path.

• Angular velocity is the rate of change of the radius of the circular path.

What is the simplest case of circular motion called when an object travels a circular path at a constant speed?

• Linear motion

• Uniform circular motion

• Oscillatory motion

• Random motion

How can centripetal acceleration be expressed in terms of angular velocity ω?