Science Tek

Which of the following statements regarding the car's motion is true?

• The speed of the car changed, but not the velocity

• The speed and velocity of the car changed.

• The velocity of the car changed, but not the speed.

• The velocity and the speed of the car stayed the same.

Tags

NGSS.MS-PS3-1

The three vehicles are all traveling at a speed of 10 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck -

• needs a large amount of force to move

• can accelerate faster than the other two vehicles

• is traveling in the opposite direction from the other two vehicles

• is traveling on a curve in the road

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which graph shows acceleration followed by a period at a constant speed then accelerating again?

• F

• G

• H

• J

Tags

NGSS.MS-PS3-1

Which graph or graphs displays the data of an object that is moving at a constant speed?

• A only

• A and C only

• C only

• A, B and C only

Tags

NGSS.MS-PS3-1

Which graph displays the data on an object that is accelerating?

• A only

• A and C only

• A and D only

• D only

Tags

NGSS.MS-PS3-1

Which of the following graphs displays the data of an object that is at rest?

• A only

• B only

• B and C only

• C only

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the average speed of a car traveling 22 meters in 11 seconds?

• 2 m/s

• 11 m/s

• 0.5 m/s

• 242 m/s

A student walks 4 km in 30 min. What is the student's average speed in km/h?

• 0.13

• 8

• 120

A hobbyist collected data about the motion of a toy train on a straight track and then recorded the data in the graph shown.

Which of these accurately describes the motion of the toy train?

• The toy train speeds up while going forward and then slows down.

• The toy train slows down while going forward and then moves backward.

• The toy train moves forward at a constant speed, slows down, and then stops.

• The toy train moves forward at an increasing speed, stops, and then moves forward.

Tags

NGSS.MS-PS3-1

A student runs two times around a running path at a local park. Each lap is 3 km. The student completes the first lap in 20 minutes. The student then sits on a bench and rests for 5 minutes before completing the second lap in 25 minutes. Which graph best represents the student's motion?

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