Constant Velocity

Which of the following statements would be true about the dot diagram for an airplane taking off from an airport?

• The dots would form an evenly spaced pattern.

• The dots would be far apart at the beginning, but get closer together as the plane accelerated.

• The dots would be close together to start with, and get farther apart as the plane accelerated.

• The dots would be close together to start, get farther apart, and become close together again as the airplane leveled off at cruising speed.

Tags

NGSS.MS-PS3-1

The graph shows the motion of a person on a bicycle. When does the person have the greatest velocity?

• Section I

• Section III

• Point D

• Point B

The graph shows the motion of a person on a bicycle. When is the person on the bicycle farthest away from the starting point?

• Point A

• Point B

• Point C

• Point D

The graph shows the motion of a person on a bicycle. Over what interval or intervals does the person on the bicycle travel the greatest distance? Choose two options.

• Section I

• Section II

• Section III

• Section IV

A squirrel descends an 8-m tree at a constant speed in 1.5 minutes. It remains still at the base of the tree for about 2.3 minutes, and then walks toward an acorn on the ground for 0.7 minutes. A loud noise causes the squirrel to scamper back up the tree in 0.1 minutes to the exact position on the branch from which it started. Which of the following graphs would accurately represent the squirrel´s vertical displacement from the base of the tree?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

NGSS.MS-PS3-1

Consider the position-time graph given. Which cyclist is ahead at the starting time?

• Cyclist A

• Cyclist B

• None of them

• Both start at the same position

Consider the position-time graph given. At time t = 7s, which cyclist is ahead?

• Cyclist A

• Cyclist B

• They are at the same position.

Consider the position-time graph given. Which cyclist is faster?

• Cyclist A

• Cyclist B

• None of them

• Both go at the same velocity

A bike travels at a constant speed of 8.0 m/s for 10.0 s. How far does it go?

• 100 m

• 90 m

• 80 m

• 70 m

A car is moving down a street at 18.0 m/s (about 65 km/h) and moves for 0.85 s before braking. How many meters will the car have moved before it begins to slow down?

• 15.3 m

• 13.5 m

• 14.5 m

• 16.0 m

Tags

NGSS.HS-PS2-1