Mass.gov
Massachusetts Department of Elementary and Secondary Education
Go to Selected Program Area
Massachusetts State Seal
Students & Families Educators & Administrators Teaching, Learning & Testing Data & Accountability Finance & Funding About the Department Education Board  
>
>
>
>
 
 
 
 
 
 
 
 
 
 
>
>
>
>
>
>
>

Massachusetts Comprehensive Assessment System

2017, High School Intro Physics

Download PDF Document  Question 45: Open-Response  
A winch is a device used to lift lobster traps out of the water and onto a lobster boat. The winch applies a force of 300 N to lift a trap a distance of 20 m in 12 s.
  1. Calculate the work performed by the winch to lift the trap. Show your calculations and include units in your answer.
  2. Calculate the power supplied by the winch to lift the trap. Show your calculations and include units in your answer.
The winch then lifts a second trap.
  1. Explain how the winch could perform the same amount of work but supply a greater amount of power when lifting the second trap.
  2. Explain how the winch could supply the same amount of power but perform a different amount of work when lifting the second trap.

Scoring Guide and Sample Student Work
Select a score point in the table below to view the sample student response.

ScoreDescription
4 The response demonstrates a thorough understanding of work and power. The response correctly calculates the work performed and power supplied to lift the first trap. The response also clearly explains how the winch could perform the same amount of work but supply a different amount of power, and how the winch could supply the same amount of power but perform a different amount of work.
4
3 The response demonstrates a general understanding of work and power.
2 The response demonstrates a limited understanding of work and power.
1 The response demonstrates a minimal understanding of work and power.
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: Electromagnetism
Question 23: Heat and Heat Transfer
Question 32: Motion and Forces
Question 44: Waves and Radiation
Question 45: Motion and Forces

Return to the MCAS 2017 Student Work Directory



Last Updated: May 9, 2007
E-mail this page| Print View| Print Pdf  
Massachusetts Department of Elementary and Secondary Education Search·Public Records Requests · A-Z Site Index · Policies · Site Info · Contact DESE