Falling Objects and Terminal Velocity: Understanding Gravity, Air Resistance and Factors Affecting Velocity

The video tutorial explores how objects behave under gravity, focusing on Newton's Second Law. It demonstrates calculations of acceleration for a hammer and a feather, showing that all objects fall with the same acceleration if weight is the only force. The concept of air resistance is introduced, explaining how it affects a skydiver's acceleration and leads to terminal velocity. The tutorial also covers factors affecting terminal velocity, such as mass and surface area.

What is the acceleration of an object when weight is the only force acting on it?

• 19.6 meters per second squared

• 4.9 meters per second squared

• 9.8 meters per second squared

• 0 meters per second squared

What force opposes the weight of a skydiver during freefall?

• Air resistance

• Magnetic force

• Gravitational force

• Frictional force

What is the term used to describe the maximum velocity a freely falling object can reach?

• Initial velocity

• Average velocity

• Final velocity

• Terminal velocity

At what stage does a skydiver experience zero acceleration?

• When air resistance is greater than weight

• When weight is the only force

• When the skydiver is at rest

• When air resistance equals weight

How does increasing the mass of an object affect its terminal velocity?

• Reverses terminal velocity

• Decreases terminal velocity

• Increases terminal velocity

• Has no effect on terminal velocity

What happens to air resistance when the surface area of an object is increased?

• Air resistance decreases

• Air resistance becomes zero

• Air resistance remains the same

• Air resistance increases

Which factor does NOT affect the terminal velocity of an object?

• Gravitational acceleration

• Color of the object

• Surface area of the object

• Mass of the object