Gravity and Centripetal Acceleration

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

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 terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

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

The number 6.67 x 10 ^-11 is called the _______________.

• universal speed constant

• the speed force

• universal gravitational constant

• Earth's gravitational constant

Tags

NGSS.HS-PS2-4

Two objects are 20 meters apart. What effect does increasing the distance between the objects to 60 meters have upon the gravitational attractive force between them?

• 1/3 the amount of force will exist
• 3 times the amount of force will exist
• 1/9 the amount of force will exist
• 9 times the amount of force will exist

Tags

NGSS.HS-PS2-4

If I double the distance between two objects, what happens to their gravitational Force?

• 4x bigger
• 4x smaller
• 2x bigger
• 2x smaller

Tags

NGSS.HS-PS2-4

What happens to Gravitational force if I double both of the masses but don't change their distance?

• doubles
• half as big
• 4x bigger
• 4x smaller

Tags

NGSS.HS-PS2-4