Physics: Uniform Circular Motion

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

• Period
• Frequency 
• Angular velocity

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

Tags

NGSS.HS-PS2-1

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

• up
• right
• down
• left

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

• 2.4 m/s
• 3.6 m/s
• 3.9 m/s
• 4.2 m/s

Tags

NGSS.HS-PS2-1

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

Tags

NGSS.HS-PS2-1

Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?

a_c= v²/r

• 0.25 ms^-2
• 0.5 ms^-2
• 1 ms^-2
• 2 ms^-2

Tags

NGSS.HS-PS2-1

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

What's the centripetal acceleration of an object traveling 2 m/s around a circle of diameter 1 m?

• 4 m/s²

• 8 m/s²

• 10 m/s²

• 16 m/s²

What is the velocity formula for uniform circular motion?

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