Motion and Speed Quiz

Which of the following is a definition of motion?

• A change in position over time

• The speed and direction of an object

• The length of the path between points

• A location compared to other locations

An athlete is running a 5-km race at an average speed of 8 km/h. She has to stop to tie her shoe. After tying her shoe, she continues running at 8 km/h. Why would her average speed for the entire race be less than 8 km/h?

• The total distance she traveled was longer than 5 km.

• The total distance she traveled was shorter than 5 km.

• The total time she took to complete the race increased because she stopped.

• The total time she took to complete the race decreased because she stopped.

Three runners compete in a 400-m race on an oval-shaped running track. At a certain time, one runner is 15 m behind the finish line. Which term describes the finish line?

• Total distance

• Relative motion

• Reference point

• Change in position

What is the difference between speed and velocity?

• Speed has direction while velocity does not

• Velocity has direction while speed does not

• Speed has a numerical value while velocity does not

• None of the above

Tags

NGSS.MS-PS3-1

Determine the time required for a car to cover a distance of 10 km while moving at a speed of 25 km/h. Show your calculations.

Calculate Mustafa's speed in kilometers per second when cycling a distance of 40 km in 20 seconds. Show your work.

Tags

NGSS.MS-PS3-1

Sophie needs 45 seconds to complete a 2000m car race. What will her speed be in m/s?

A whale swims at a constant speed of 8.0 m/s for 17 s. Calculate the distance travelled by the whale.

How far did the train move in 3 seconds?

Tags

NGSS.MS-PS3-1

How long it took the train to pass 40m?