Physics

What does the slope of a position-time graph represent?

Velocity.

What is indicated by a curve on a graph?

Acceleration.

Give an example of a scalar quantity.

Speed, Distance, or Time.

Give an example of a vector quantity.

Acceleration, Displacement, or Velocity.

What is Newton's First Law?

An object stays at rest or in uniform motion unless acted on by an unbalanced force.

List factors that affect braking distance.

Speed, road surface, tire condition, and brake condition.

What is total stopping distance?

The sum of reaction distance and braking distance.

What formula is used to calculate average velocity?

Average velocity = total displacement / total time.

What does momentum depend on?

Mass and velocity of an object.

How does inertia relate to car collisions?

Unrestrained occupants continue moving forward after a crash due to inertia.

Name an internal factor that could negatively impact driving.

Fatigue, Alcohol or drugs, or Emotional stress.

What should you do to sketch a velocity-time graph?

Label the axes and indicate straight lines or curves to represent changes in speed.

What does a flat section on a velocity-time graph indicate?

Constant speed.

Describe motion during a downward slope on a velocity-time graph.

Speeding up.

Describe motion during an upward slope on a velocity-time graph.

Slowing down.