UCM Concepts Quiz

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle

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

• up
• right
• down
• left

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

• outwards
• towards the center
• tangent
• faster

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

• Friction
• Centripetal Force
• Gravity
• Inertia

Centrifugal force is a ______

• force that pushes you to the outside of a circle during uniform circular motion.
• fictitious force that is really just the linear momentum of an object in uniform circular motion.  
• The force that keeps the planets in orbit

Centripetal acceleration is ...

• Acceleration toward the center of a curved or circular path
• Acceleration toward the outside of a circle
• Vertical motion instead of horizontal motion

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

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?

• 
• 
• 
• 

The time taken for one complete circuit is called the... 

• Period
• Frequency 
• Angular velocity

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