UCM Quiz 3

The velocity is always _____ to the line of a circle. 

• outwards
• towards the center
• tangent
• faster

How can you find the distance around a circle?

• 2πr

• d/t

• v²

• T

An object moves in a circular path at a constant speed.  Compare the direction of the object's velocity and acceleration vectors.

• Both vectors point in the same direction

• The vectors point in opposite directions

• The vectors are perpendicular

• The question is meaningless, since the acceleration is zero

An object is traveling in a circular path whose radius is 10m.  Its acceleration is 4.9 m/s².  What is its velocity?

• 4.0 m/s

• 7.0 m/s

• 14 m/s

• 18 m/s

Which represents the centripetal acceleration of the ball?

• A
• B
• C
• D

A car travels counterclockwise with constant speed around the track shown to the right. Which of the vectors depicts the direction of the net force acting on the car at the point shown.

• A
• B
• C
• D

What is the direction of the velocity at point B, if the ball is revolving clockwise?

• up
• right
• down
• left

Which number is the BASE?
2³ = 8

• 2

• 3

• 8

Change from standard form to scientific notation: 0.000398

• 39.8 x 10^-5

• 3.98 x 10^-5

• 3.98 x 10^-4

• 39.8 x 10^-6

The Period of circular motion is

• 60 seconds.

• the time it takes to make one revolution.

• half the frequency.

• acceleration.