Unit 2 -Test Review

Front

What is the difference between displacement and distance?

Back

Displacement is a vector quantity that refers to the change in position of an object, while distance is a scalar quantity that refers to the total path length traveled by the object.

Front

What happens to acceleration if mass decreases while a constant force is applied?

Back

The acceleration increases because acceleration is inversely proportional to mass when force is constant (F = ma).

Front

Calculate the acceleration of a car that goes from rest to 20 m/s in 5 seconds.

Back

Acceleration = (Final Velocity - Initial Velocity) / Time = (20 m/s - 0 m/s) / 5 s = 4 m/s².

Front

What defines velocity as a vector quantity?

Back

Velocity is defined as a vector because it has both magnitude (speed) and direction.

Front

How do you calculate displacement given initial and final positions?

Back

Displacement = Final Position - Initial Position.

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration (F = ma).

Front

What is the relationship between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity includes both speed and direction.

Front

What is a scalar quantity? Give an example.

Back

A scalar quantity is a physical quantity that has only magnitude and no direction. Example: Distance.

Front

What is a vector quantity? Give an example.

Back

A vector quantity is a physical quantity that has both magnitude and direction. Example: Displacement.

Front

If an object moves 30 km east and then 10 km west, what is its displacement?

Back

Displacement = 30 km - 10 km = 20 km east.