Physics Quiz 03

The graph above shows the motion of a dog pacing along a fence. For the five time intervals shown, during how many intervals does the dog have the same average velocity?

• 0

• 1

• 2

• 3

The graph above shows the motion of a dog pacing along a fence. For the five time intervals shown, during how many intervals does the dog pace at the same average speed?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS3-1

This question refers to the following velocity-time graph of a jogger. The positive direction is away from the jogger’s home. The jogger is at rest during which interval?

• AB

• BC

• DE

• EF

This question refers to the following velocity-time graph of a jogger. The positive direction is away from the jogger’s home. During which of the following intervals does the jogger have a constant positive velocity?

• BC

• CD

• DE

• FG

This question refers to the following velocity-time graph of a jogger. The positive direction is away from the jogger’s home. During which interval is the magnitude of the jogger’s acceleration the greatest?

• AB

• BC

• DE

• EF

Tags

NGSS.HS-PS2-1

An object in free fall

• experiences no air resistance.

• undergoes a downward acceleration.

• has an acceleration with a magnitude of 9.81 m/s² near Earth’s surface.

• all of the above

The graph below shows the motion of four objects. Which of the following lines represent an object in free fall? Assume positive velocity is upward.

• I only

• II only

• I and III

• I and IV

Acceleration due to gravity is also called

• negative velocity.

• displacement.

• free-fall acceleration.

• instantaneous velocity.

Tags

NGSS.HS-PS2-4

When there is no air resistance, objects of different masses dropped from rest

• fall with equal accelerations and with equal displacements.

• fall with different accelerations and with different displacements.

• fall with equal accelerations and with different displacements.

• fall with different accelerations and with equal displacements.

Tags

NGSS.HS-PS2-1

Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

• the feather

• the metal bolt

• They would hit the ground at the same time.

• They would be suspended in a vacuum.