




Massachusetts Comprehensive Assessment System
2016, High School Intro Physics
Question 32: OpenResponse 

Reporting Category: Motion and Forces Standard: 1.2  Distinguish between displacement, distance, velocity, speed, and acceleration. Solve problems involving displacement, distance, velocity, speed, and constant acceleration.

A car entering a highway stops on the entrance ramp. The car then accelerates uniformly along a straight line, reaching 28 m/s in 5.6 s. What is the average acceleration of the car during the 5.6 s? Show your calculations and include units in your answer.
 How far does the car travel in the 5.6 s? Show your calculations and include units in your answer.
 Traveling in a straight line, the car slows down uniformly from 28 m/s, taking 3.5 s to come to a stop. What is the car’s average acceleration during the 3.5 s? Show your calculations and include units in your answer.
 How far does the car travel during the 3.5 s it takes to stop? Show your calculations and include units in your answer.

Scoring Guide and Sample Student Work Select a score point in the table below to view the sample student response.
Score  Description 
4 
The response demonstrates a thorough understanding of the relationships among distance, velocity, and constant acceleration. The response correctly calculates the average acceleration of the car and the distances the car travels in both situations. 
4 
3 
The response demonstrates a general understanding of the relationships among distance, velocity, and constant acceleration. 
2 
The response demonstrates a limited understanding of the relationships among distance, velocity, and constant acceleration. 
1 
The response demonstrates a minimal understanding of the relationships among distance, velocity, and constant acceleration. 
0 
The response is incorrect or contains some correct work that is irrelevant to the skill or concept being measured. 
Note: There are 2 sample student responses for Score Point 4.
High School Intro Physics
 Question 12: Waves and Radiation
 Question 23: Electromagnetism
 Question 32: Motion and Forces
 Question 44: Heat and Heat Transfer
 Question 45: Motion and Forces
Return to the MCAS 2016 Student Work Directory
Last Updated: October 26, 2015


