Circular Motion and Gravitation

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

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

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

Tags

NGSS.HS-PS2-1

Period (T) is measured in cycles per second

• True
• False

Tags

NGSS.HS-PS4-1

What is the force that causes centripetal acceleration when a car goes around a curve?

• Friction
• Gravity 
• Normal
• Tension

At the top of a roller-coaster loop, gravity and the normal force point in opposite directions.

• True
• False

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Who created the Universal Law of Gravitation?

• Copernicus
• Newton
• Kepler
• Galileo

Tags

NGSS.HS-PS2-4

Any object with mass is surrounded by a gravitational field.

• True
• False
• Inconceivable
• Star Wars!

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

The gravitational force between two bodies is proportional to the product of their masses, and inversely proportional to the cube of the distance between them

• True
• False
• Whatever
• Possibly...

Tags

NGSS.HS-PS2-4

Friction acts in a direction_______ to the direction of an object's motion.

• unrelated
• equal
• opposite
• perpendicular

Tags

NGSS.HS-PS2-1

If you went to the moon, would your weight change?

• Yes
• No
• Maybe

Tags

NGSS.HS-PS2-4