Public Release Item
Selected Response Item for Grade 8
Standard 5.0 Physics
Topic A. Mechanics
Indicator 1. Develop an explanation of motion using the relationships among time, distance, velocity, and acceleration.
Objective c. Compare accelerated and constant motions using time, distance, and velocity.
Use the information below to answer the following.
A group of students investigated physics concepts at an ice-skating rink. The students skated at different speeds and pushed boxes across the ice. The boxes were exactly the same except for their mass.
The data tables below show the times and distances traveled by two ice skaters.
Skater Z demonstrated what type of motion?
- uniform motion
- periodic motion
- constant motion
- accelerated motion
|D. accelerated motion|