Terminal Velocity Weightlessness Free Fall Air Resistance

Look at the pictures of the cars. Which car will have the most air resistance force acting upon it? They will be moving at the same speed.

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• 
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• All will have equal air resistance force.

What is happening at E?

• Stationary

• Accelerating

• Fast steady speed; moving away from the starting position

• Steady speed; returning to start position

Tags

NGSS.MS-PS3-1

What is the force that opposes the motion of objects through air?

• terminal velocity

• projectile motion

• air resistance

• gravity

What is the constant velocity of a falling object when the force of gravity is balanced by air resistance?

• terminal velocity

• projectile motion

• air resistance

• gravity

Tags

NGSS.MS-PS2-2

What is the motion of a body when only the force of gravity is acting on the body?

• free fall

• centripetal force

• orbit

• velocity

Tags

NGSS.MS-PS2-4

Orbital motion is a combination of forward motion and

• weightlessness

• free fall

• horizontal acceleration

• frictional resistance

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Why does a crumpled piece of paper land before a flat sheet of paper?

• There is more air resistance on the flat paper

• Gravity exerts more force on the crumpled sheet

• The crumpled paper is heavier

• The crumpled paper is lighter

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is terminal velocity?

• The maximum speed an object reaches when falling through a fluid

• The speed at which an object stops accelerating

• The speed at which an object starts accelerating

• The speed at which an object reaches the ground

Tags

NGSS.MS-PS2-2

Which of the following best describes weightlessness?

• The absence of gravity

• The sensation of having no weight due to free fall

• The reduction of weight due to air resistance

• The increase of weight due to acceleration

What happens to an object in free fall?

• It accelerates due to gravity without air resistance

• It moves at a constant speed

• It decelerates due to air resistance

• It remains stationary

Tags

NGSS.MS-PS2-4