Motion Flashcard

Front

What is motion?

Back

When an object changes its position.

Front

What is a reference point?

Back

An indicator that orients you and is the place from where you measure, record, or witness an event.

Front

How is distance defined in the context of motion?

Back

How far an object has moved

Front

Which of the following is a correct example of displacement?

• A car travels 100 km north and then 100 km south, resulting in a displacement of 200 km.
• A runner completes a 400 m track and ends where they started, resulting in a displacement of 0 m.
• A ball is thrown upwards and lands in the same spot, resulting in a displacement of twice the height reached.
• A person walks around their neighborhood and returns home, resulting in a displacement equal to the total distance walked.

Back

A runner completes a 400 m track and ends where they started, resulting in a displacement of 0 m.

Front

If you ran 2 km in 10 minutes, what would be your speed in km/min?

Back

0.5 km/min

Front

What is the speed of sound in dry air as given in the example?

Back

343 m/s

Front

If a lightning bolt strikes the ground 2 km away, how long will it take for the sound to reach you according to the example?

Back

5.8 seconds

Front

What is average speed defined as?

Back

The total distance traveled divided by the total time traveled

Front

Driving to Clemson: 300 miles in 5 hours. What is your average speed?

Back

60 mi/hr

Front

What does instantaneous speed refer to?

Back

The speed of a vehicle at a specific point in time