4.3 Orbital Motion

Inertia is always tangent to the centripetal force.

• True
• False

Tags

NGSS.HS-PS2-1

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

Tags

NGSS.HS-PS2-1

Which of the following units is used for tangential velocity?

• m/s²
• N
• J
• m/s

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

When an object is in circular motion it is constantly changing its velocity.

• True
• False

Tags

NGSS.HS-PS2-1

The centripetal force of satellites is similar to gravitational force because they are both a net force towards the center of earth.

• True
• False

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

If centripetal force stopped acting on all satellites they would continue traveling in space in a constant direction and constant speed.

• True
• False

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-2

What are the factors which combine to to keep celestial bodies in orbit? 

• Air Resistance and Gravity 
• Gravity and Inertia 
• Inertia and orbital speed
• Orbital speed and gravity 

How does orbital velocity scale with distance?

• Objects closer to the Sun have greater orbital velocity

• Object further from the Sun have less orbital velocity

• Orbital velocity does not scale with distance

If a satellite is closer to Earth, it must travel ______ than a satellite further from Earth.

• The same speed

• Slower

• Faster