Front

What does a downward curving line on a distance-time graph indicate about an object's speed?

Back

The object's speed is decreasing.

Front

What does a straight, sloped line on a distance-time graph represent?

Back

Constant speed.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken.

Front

If a race car travels 400 m in 4 seconds, what is its average speed?

Back

100 meters per second.

Front

What are the axes on a distance-time graph?

Back

The x-axis is time and the y-axis is distance.

Front

What does a horizontal line on a distance-time graph indicate?

Back

The object is at rest.

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.

Front

What does an upward sloping line on a distance-time graph indicate?

Back

The object is moving away from the starting point at a constant speed.

Front

What does a steeper slope on a distance-time graph indicate?

Back

A steeper slope indicates a higher speed.

Front

What happens to the speed of an object if the distance-time graph shows a straight vertical line?

Back

It indicates an infinite speed, which is not physically possible; it suggests an error in measurement.