Understanding Distance-Time Graphs

Bob runs from 4:50 pm until 5:20pm at an average speed of 7km/h. How far did he go?

• 4.5km

• 2.5km

• 3.5km

• 14km

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A distance-time graph shows a straight line with a positive slope. What does this indicate about the object's motion?

• The object is at rest.

• The object is moving at a constant speed.

• The object is accelerating.

• The object is decelerating.

If a car travels 150 kilometers in 3 hours, what is its average speed?

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

On a distance-time graph, what does a horizontal line represent?

• The object is moving at a constant speed.

• The object is accelerating.

• The object is at rest.

• The object is moving backward.

A cyclist travels 30 km in 2 hours and then 50 km in 3 hours. What is the cyclist's average speed for the entire journey?

• 16 km/h

• 20 km/h

• 25 km/h

• 30 km/h

Which of the following distance-time graphs indicates that the object is accelerating?

• A straight line with a positive slope.

• A curve that gets steeper over time.

• A horizontal line.

• A curve that flattens over time.

If a runner covers 400 meters in 50 seconds, what is their average speed in meters per second?

• 6 m/s

• 7 m/s

• 8 m/s

• 9 m/s

On a distance-time graph, how can you identify a section where the object is moving at a constant speed?

• The line is horizontal.

• The line is a straight diagonal.

• The line is curved upwards.

• The line is curved downwards.

A car travels at a constant speed of 80 km/h for 2.5 hours. How far does it travel?

• 180 km

• 190 km

• 200 km

• 210 km