Circular Motion

What is Circular Motion?

• When an object moves in a circular path around a center point

• When an object moves in a straight path away from a center point

What is the direction of the centripetal force?

• Away from the center of the circular path

• Parallel to the circular path

• Perpendicular to the circular path

• Towards the center of the circular path

What is tangential velocity?

• The velocity of an object moving in a straight line towards the center of a circle.

• The velocity of an object moving in a straight line away from the center of a circle.

• The velocity of an object moving in a zigzag pattern along a circular path.

• The velocity of an object moving along a circular path at any given point, tangent to the circle at that point.

What is the formula for centripetal acceleration?

• a = v / r

• a = v^2 / r

• a = r / v

• a = v * r

A tennis ball on a string is spun clockwise around a circle. After the string breaks, which path will the tennis ball follow?

• Path I

• Path II

• Path III

• Path IV

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

• outwards
• towards the center
• tangent
• faster

A 1750 kg car travels at a constant speed of 15 m/s around a horizontal, circular track with a radius of 45 m. What is the magnitude of the centripetal force acting on the car?

• 5.00 N

• 583 N

• 8750 N

• 3.94 × 10⁵ N

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

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

the circular path of an object as it revolves around another object

• Equinox

• Hemisphere

• Rotation

• Orbit