Exit Check 2.4 - 2nd Law Graphs

2.4.1

Assume that all objects are affected by the same net force. Which object has the largest mass?

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Answer explanation

These questions are similar to your Unit 1 practice, with two key differences.

First, check the dependent variable to know how to read the graph or table.

If the dependent variable is displacement then acceleration is shown by a curved line or changing values in uneven steps.

If the dependent variable is velocity then any change at all means acceleration.

If you have identified an acceleration you have also identified evidence of a net force because net force causes acceleration.

Tags

HS-PS2-A-1

2.4.1

During which of the following intervals is the object experiencing an unbalanced net force

• For the entire time from point A to Point B

• For the entire time from point B to Point C

• For the entire time from point C to Point D

• For the entire time from point D to Point E

Answer explanation

These questions are similar to your Unit 1 practice, with two key differences.

First, check the dependent variable to know how to read the graph or table.

If the dependent variable is displacement then acceleration is shown by a curved line or changing values in uneven steps.

If the dependent variable is velocity then any change at all means acceleration.

If you have identified an acceleration you have also identified evidence of a net force because net force causes acceleration.

Tags

HS-PS2-A-1

2.4.1

The table shows the speed of each car recorded at each second. Which car(s) are experiencing no net force for the entire 4 seconds?

• A

• B

• C

• D

Answer explanation

These questions are similar to your Unit 1 practice, with two key differences.

First, check the dependent variable to know how to read the graph or table.

If the dependent variable is displacement then acceleration is shown by a curved line or changing values in uneven steps.

If the dependent variable is velocity then any change at all means acceleration.

If you have identified an acceleration you have also identified evidence of a net force because net force causes acceleration.

Tags

HS-PS2-A-1

2.4.1

During which intervals is the object not experiencing a net force (or is experiencing a net force of zero)?

• A to B, D to E and G to H

• B to C, D to E, and F to G

• C to D, E to F and G to H

• There is no point on the graph where the net force is balanced.

Answer explanation

These questions are similar to your Unit 1 practice, with two key differences.

First, check the dependent variable to know how to read the graph or table.

If the dependent variable is displacement then acceleration is shown by a curved line or changing values in uneven steps.

If the dependent variable is velocity then any change at all means acceleration.

If you have identified an acceleration you have also identified evidence of a net force because net force causes acceleration.

Tags

HS-PS2-A-1

2.4.2

A student is investigating acceleration using balls with different masses. The student pushes each ball on a flat surface and records its acceleration. The table shows his observations.

The students then predicted the acceleration of a ball with 10kg of mass. Which of the following predictions includes good reasoning based on the data provided?

• The student did not record a ball with 10kg of mass so it is impossible to predict if one will roll or have an acceleration at all.

Tags

HS-PS2-A-1

2.4.2

The graph shows the velocity versus time for 4 different cars on a race track. If all four cars have the same mass, which one experiences the largest net force?

• A

• B

• C

• D

Tags

HS-PS2-A-1

2.4.2

The graph shows the velocity versus time for 4 different cars on a race track. If cars B, C, and D all experience the same net force, which car has the most mass?

• B

• C

• D

Tags

HS-PS2-A-1

2.4.2

The table shows the speed of each car recorded at each second. If the cars have an equal mass, which one experienced the largest net force?

• A

• B

• C

• D

Tags

HS-PS2-A-1

2.4.2

Assume that all objects have the same mass. Rank the data tables by the size of the net force acting on them with the smallest net force on the left and the largest on the right.

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Tags

HS-PS2-A-1

2.4.2

Assume that all objects have the same mass. Rank the graphs by the size of the net force acting on them with the smallest net force on the left and the largest on the right.

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Tags

HS-PS2-A-1