Category

The picture shows an aerialist walking on a tightrope and holding a balancing bar.

An action–reaction pair of forces exists between —

• the aerialist’s feet and the rope

• the rope and the balancing bar

• the two ends of the rope

• the aerialist’s arms and legs

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

A block is pulled 0.90 m to the right in 2.5 s.

What is the block’s average speed to the nearest hundredth of a m/s?

• 36 m/s

• 0.36 m/s

• 0.036 m/s

• 036 m/s

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?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram below.

If the load exerts a strong downward force, the glue —

• destroys the force

• exerts a stronger downward force

• causes the load to accelerate upward

• exerts an upward force that is equal to the downward force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

At which point will the skater have the least potential energy?

• Point A

• Point B

• Point C

• Point A and C

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Which point has the most kinetic energy?

• D

• E

• C

• F

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

At which point is potential energy greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

Which graph shows: A car travelling at a constant speed.

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Which graph represents slowing down?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-5

Which graph represents the greatest acceleration?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1