DA 1D & 2D Review A

A student throws a stone upward at an angle of 45°. Which of the following statements best describes the stone at the highest point that it reaches?

• Its acceleration is zero.

• Its potential energy is at a minimum

• Its kinetic energy is at a minimum.

• Its acceleration is at a maximum.

Tags

NGSS.HS-PS3-1

The diagram depicts two forces, A and R.

Which of the following best represents a force B that could be added to A to produce R?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

Look at the figures .

If the two vectors, X and Y, are added, which diagram shows the resultant?

• A

• B

• C

• D

The diagram depicts the path of a ball that is tossed from a building; air resistance is ignored.

At which point of the ball's path is the vertical component of the ball's velocity zero?

• A

• B

• C

• D

At which point is the ball moving with the least amount of speed?

• A

• B

• C

• D

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

At which point is the ball's speed about equal to the speed at which it was first released?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

The diagram represents two concurrent forces.

Which of the following vectors best represents the force that will produce equilibrium with these two forces?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

A rock is released from rest and freely falls 7.0 m to the ground. What is its velocity just before impact?

• 1.2 m/s

• 7.0 m/s

• 9.8 m/s

• 12 m/s

Tags

NGSS.HS-PS2-1

If a dolphin swims at 1.85 m/s, how far will the dolphin have

traveled after 6.0 s?

• 3.2 m

• 9.0 m

• 11 m

• 31 m

Multiplying or dividing vectors by scalars results in

• vertors

• scalars

• vectors if multiplied and scalars if divided.

• scalars if multiplied and vectors if divided.