Speed Distance Time

A dog walks away from home at a constant pace for 20 minutes. Next, he stops for a 10 minute nap under a tree. Finally, he walks back home at a constant pace and comes to a stop.

Which graph below best represents the motion of the dog in terms of distance from home over time?

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Tags

NGSS.MS-PS3-1

During field day, a student recorded the motion data of a runner. The student recorded the distance traveled every 10 seconds and represented the data in a graph.

What is a valid conclusion that the student can make about the runner’s motion?

• The average speed of the runner remained constant as the runner covered more distance.

• The average speed of the runner increased as the runner covered more distance.

• The average speed of the runner decreased as the runner covered more distance.

• The average speed of the runner increased and then remained constant as the runner covered more distance.

Tags

NGSS.MS-PS3-1

The graph shows the distance an object traveled in 11 seconds.

Which answer choice best describes the movement of the object between the times of 0 and 6 seconds on the graph?

• Moving at a constant speed

• Accelerating

• Moving toward the north

• Stopped

Tags

NGSS.MS-PS3-1

Students slid a small wood block along a flat tabletop for a distance of 1.6 m. The data show the motion of the block of wood.

Which graph displays the motion of the wood block?

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Tags

NGSS.MS-PS3-1

The distance vs. time graph of four toy cars traveling in a straight line is shown. Which car has the greatest speed?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

The graph shows the speed of a car traveling east over a 12-second period on a flat surface. In the first 6 seconds shown on the graph, the car is —

• increasing its speed

• changing direction

• heading northeast

• gaining potential energy

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?

• 28.0 km/hr

• 7.0 km/hr

• 12.0 km/hr

• 0.14 km/hr

Observe the inclined plane and ball in the above image. If the ball rolls down the inclined plane in the direction of the arrow in 2.42 seconds, what is the average speed of the ball during the roll?

• 4.96 m/s

• 2.07 m/s

• 1.65 m/s

• 1.24 m/s

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-1

Students in an after school Science Club launched rockets. One rocket traveled 360 meters into the sky. It took 4 seconds for the rocket to reach that height. What was the rocket's average speed?

• 80 m/s

• 90 m/s

• 100 m/s

• 110 m/s

An airplane flies with a constant speed of 800 miles per hour. How far can it travel in 2 hours?

• 1600 mi

• 400 mi

• .0025 mi

• 4 mi