Exam Review Modules 2-3

Front

What is the distance between an object and a reference point called?

Back

Position

Front

If a runner maintains a constant speed of 10 km/h, how long will it take to complete a marathon race of 26.2 miles? (1 km = 0.62 mi)

Back

3.14 h

Front

What does it mean if an object has a constant velocity?

Back

It has an acceleration of zero.

Front

What is the term for acceleration toward the center of a curved or circular path?

Back

Centripetal acceleration

Front

What is the formula for acceleration?

Back

Acceleration is the change in velocity divided by the time needed for the change to occur.

Front

What is displacement?

Back

Displacement is the shortest distance from the initial to the final position of an object.

Front

Define velocity.

Back

Velocity is the speed of an object in a specific direction.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is the unit of acceleration?

Back

Meters per second squared (m/s²).

Front

What does a negative acceleration indicate?

Back

It indicates that an object is slowing down.