Skydiving Physics Concepts

The video tutorial explains solving a physics problem using numerical substitution for a quick solution. It then explores the concept of terminal velocity through a skydiver example, explaining how air resistance balances gravitational force at terminal velocity. The tutorial further discusses how changing body position affects terminal velocity, emphasizing the role of aerodynamics and surface area in wind resistance.

What is the acceleration when a force of 10 Newtons is applied to a mass of 2 kilograms?

• 20 meters per second squared

• 2 meters per second squared

• 5 meters per second squared

• 10 meters per second squared

If the force remains constant and the acceleration is reduced to 1/5, what happens to the mass?

• The mass increases fivefold

• The mass decreases by half

• The mass doubles

• The mass remains the same

What is the terminal velocity of a skydiver weighing 70 kilograms in meters per second?

• 9.8 meters per second

• 53.6 meters per second

• 70 meters per second

• 120 meters per second

At terminal velocity, what is the relationship between the force of air resistance and the force of gravity?

• Air resistance is twice gravity

• Air resistance is less than gravity

• Air resistance equals gravity

• Air resistance is greater than gravity

How does a skydiver's terminal velocity change when they pull in their arms and aim their body downward?

• It becomes zero

• It remains the same

• It decreases

• It increases

Why does a skydiver experience a higher terminal velocity when diving headfirst?

• Increased air resistance

• Decreased air resistance

• Decreased gravitational force

• Increased surface area

What is the force of gravity acting on a 70 kg skydiver?

• 686 Newtons

• 9.8 Newtons

• 70 Newtons

• 700 Newtons

When a skydiver reaches a new terminal velocity, what happens to their acceleration?

• It becomes zero

• It doubles

• It decreases

• It increases

What happens to the force of air resistance when a skydiver reaches terminal velocity?

• It equals gravity

• It becomes less than gravity

• It becomes zero

• It becomes greater than gravity

Why does the force of air resistance remain the same even when a skydiver increases their speed by changing position?

• Because the surface area exposed to air increases

• Because the gravitational force increases

• Because the surface area exposed to air decreases

• Because the gravitational force decreases