Exploring Internal Forces and Apparent Weight in One Dimensional Systems

What are the two objects being modeled in the video?

• A plane and a runway

• A person and an elevator

• A boat and a river

• A car and a road

If an elevator's velocity changes from V1 to a smaller V2, what is the direction of the acceleration?

• Downward

• Upward

• Sideways

• No acceleration

What is the term for the change in velocity over time?

• Momentum

• Force

• Acceleration

• Speed

What happens to your apparent weight when an elevator decelerates while moving downward?

• It remains the same

• It decreases

• It fluctuates

• It increases

When an elevator moves upward at a constant speed and then slows down, what happens to your apparent weight?

• It decreases

• It fluctuates

• It remains the same

• It increases

What force acts upward on a person in an elevator?

• Frictional force

• Normal force

• Tension force

• Gravitational force

What is the direction of the normal force acting on a person in an elevator?

• No direction

• Upward

• Sideways

• Downward

In a free body diagram, what does the tension force represent?

• The force of the person on the elevator

• The normal force

• The force of gravity

• The force from the cables holding the elevator

What is the relationship between the forces of the elevator on the person and the person on the elevator?

• They are equal in magnitude and opposite in direction

• They are equal in magnitude and same in direction

• They are different in magnitude and opposite in direction

• They are different in magnitude and same in direction

What is the sum of the forces equal to according to Newton's Second Law?

• Force times distance

• Velocity times acceleration

• Mass times acceleration

• Mass times velocity