Physics Centripetal Force

A horse gallops around a circular arena.  The centripetal force on the horse is ___.

• directed outward
• tension
• directed toward the center of the arena
• 9.8 N

What relationship exists between the radius of a circle and the centripetal acceleration?

• direct
• inverse
• exponential
• inverse squared

An object moves in a circle at a constant speed. Which of the following is NOT true f the object?

• its centripetal acceleration points toward the center of the circle
• its tangential speed is constant
• its velocity is constant
• a centripetal force acts on the object

A car traveling at 15 m/s on a flat surface turns in a circle with a radius of 25 m.  What is the centripetal acceleration of the car?

• 2.4 x 10^-2 m/s²
• 0.60 m/s²
• 9.0 m/s²
• zero

Tags

NGSS.HS-PS2-1

Which of the following units is used for tangential velocity?

• m/s²
• N
• J
• m/s

Which of the following terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian

A test car moves at a constant speed around a circular track.  If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s², what is the car's tangential speed?

• 19.7 m/s
• 5.99 m/s
• 0.17 m/s
• 388.01 m/s

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

What is the relationship between centripetal force and the mass of an object?

• direct
• inverse
• exponential
• inverse squared

What happens to the centripetal force exerted on an object if you triple the velocity?

• it increases to 3X
• it decreases to 6X
• it increases to 6X
• it increases to 9X