1-D Test Review

Front

What is a scalar quantity?

Back

A scalar quantity is a physical quantity that has only magnitude and no direction. Examples include temperature, mass, and speed.

Front

What is the difference between constant velocity and acceleration?

Back

Constant velocity means an object is moving at a steady speed in a straight line, while acceleration refers to a change in velocity over time.

Front

What happens to objects in free fall in a vacuum?

Back

In a vacuum, all objects fall at the same rate regardless of their mass, due to the absence of air resistance.

Front

What is the formula for calculating distance when acceleration is involved?

Back

The formula is d = vit + ½ at², where d is distance, vi is initial velocity, a is acceleration, and t is time.

Front

What does a positive acceleration indicate about an object's motion?

Back

Positive acceleration indicates that an object is increasing its velocity over time.

Front

What is the significance of slope in a distance-time graph?

Back

The slope of a distance-time graph represents the speed of the object; a steeper slope indicates a higher speed.

Front

What is the formula for final velocity in terms of initial velocity, acceleration, and time?

Back

The formula is vf = vi + at, where vf is final velocity, vi is initial velocity, a is acceleration, and t is time.

Front

How does air resistance affect falling objects?

Back

Air resistance slows down the motion of objects falling through the air, causing lighter objects to fall slower than heavier ones.

Front

What is the relationship between distance, speed, and time?

Back

The relationship is given by the formula: distance = speed × time.

Front

What is the difference between speed and velocity?

Back

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