Air Resistance & Terminal Velocity

How does air resistance affect the motion of objects?

• Air resistance causes objects to move in a circular path.

• Air resistance has no effect on the motion of objects.

• Air resistance speeds up the motion of objects by pushing them forward.

• Air resistance slows down the motion of objects by exerting a force opposite to their direction of motion.

What is terminal velocity?

• Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

• Terminal velocity is the maximum speed an object can reach in a vacuum.

• Terminal velocity is the speed at which an object stops moving.

• Terminal velocity is the acceleration of an object as it falls.

Explain the factors that can affect the terminal velocity of an object.

• Terminal velocity is not influenced by air density

• The object's terminal velocity is determined by its shape alone

• Terminal velocity can be affected by the object's mass, surface area, air density, and gravitational force.

• Terminal velocity is only affected by the object's color

How can air resistance be reduced in vehicles to increase speed?

• Increase tire pressure

• Improve aerodynamics

• Install a larger engine

• Add more weight to the vehicle

Provide real-life examples where terminal velocity plays a significant role.

• Cars accelerating to terminal velocity

• Skydivers and raindrops falling at terminal velocity.

• Boats reaching terminal velocity in water

• Birds flying at terminal velocity

Why do objects reach a terminal velocity when falling through the air?

• Objects reach terminal velocity because of the Earth's rotation

• The force of gravity pulling the object down is balanced by the air resistance pushing up.

• Objects reach terminal velocity because of gravitational pull only

• Objects reach terminal velocity due to magnetic forces

Calculate the terminal velocity of an object with a mass of 2kg and a drag force of 20N.

• 25 m/s

• 5 m/s

• 10 m/s

• 15 m/s

What role does the surface area of an object play in determining its terminal velocity?

• Increasing surface area decreases terminal velocity.

• Surface area affects the weight of the object, not the terminal velocity.

• Surface area affects air resistance, which in turn affects terminal velocity.

• Surface area has no impact on terminal velocity.

How does the shape of an object impact its air resistance and terminal velocity?

• The shape of an object has no impact on air resistance and terminal velocity

• Objects with irregular shapes experience less air resistance

• The shape of an object impacts its air resistance and terminal velocity by affecting the amount of drag experienced. Streamlined shapes reduce air resistance, allowing objects to reach terminal velocity faster.

• Objects with sharp edges have higher terminal velocity

Discuss the relationship between weight and terminal velocity of an object.

• Terminal velocity of an object is inversely proportional to its weight.

• Weight has no impact on the terminal velocity of an object.

• Terminal velocity of an object decreases as weight increases.

• Terminal velocity of an object is directly proportional to its weight.