Module 2, Lesson 1: Describe Motion

Think-Pair-Share
What is motion?
What ways can motion be described?

Multiple Select

Select all statements that are true about motion and reference points.

• A reference point is needed to determine the position of an object.

• Motion is a change in an object's position relative to a reference point.

• You always need to see something move to know that motion has taken place.

• How you describe an object's motion depends on the reference point chosen.

Multiple Choice

After a reference point is chosen, a frame of reference can be created. What is a frame of reference?

• A system for measuring the position of objects using coordinates.

• A tool for measuring speed.

• A way to calculate displacement only.

• A method for finding the mass of an object.

Multiple Choice

Which of the following scenarios demonstrates that displacement cannot be directly added or subtracted?

• Two movements in the same direction.

• Two movements in exactly opposite directions.

• Two movements that are not in the same or opposite direction.

• Two movements along a straight line.

Multiple Choice

Which of the following best describes the difference between distance and displacement?

• Distance is the total length traveled, while displacement is the straight-line distance from the starting point to the ending point.

• Distance is always shorter than displacement.

• Displacement is the total length traveled, while distance is the straight-line distance from the starting point to the ending point.

• Distance and displacement are always equal.

Multiple Choice

Which of the following statements best explains how speed can change over a journey, as shown in the graph?

• Speed always increases over time.

• Speed remains constant throughout the journey.

• Speed can increase, decrease, or remain constant at different intervals.

• Speed only decreases when going uphill.

Open Ended

How can you determine the speed of an object from a distance-time graph?

Multiple Select

Select all correct statements about interpreting a distance-time graph:

• The slope of the line represents speed.

• A straight line indicates constant speed.

• The steepest line shows the fastest speed.

• A horizontal line means increasing speed.

Multiple Choice

How is speed defined?

• acceleration/time

• distance/time

• change in velocity/time

• displacement/time

Multiple Choice

What is the speed of a walker who covers a distance of 1000 m in 25 minutes? (25 min = 1500 s)

• 40 m/s

• 1.6 m/s

• 0.67 m/s

• 0.67 s/m

Multiple Choice

A wolf walks 20 km east and then turns around and walks 10 km west. What is the total displacement?

• 30 km east

• 30 km west

• 10 km east

• 10 km west

Multiple Choice

Which of the following is NOT true of a distance-time graph?

• The slope of the graph equals the object's speed.

• Distance is on the x-axis.

• Time is on the x-axis.

• The line is straight if speed is constant.

Multiple Choice

Which of the following is true?

• Speed is usually constant.

• Average speed is the total time of travel divided by the distance traveled.

• If an object is moving with a constant speed, the instantaneous speed does not change.

• The x-axis is divided into equal distance intervals on a distance-time graph.

Open Ended

After learning about describing motion, what is one real-life example where understanding motion is important?