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PS 08 Force & Moti

8th Grade 2022

QuestionAnswer
A change in an objects position over time. Speed
Two factors that determine the speed of an object. The distance traveled and the time it takes.
Speed with direction Velocity
The change in velocity over time. Acceleration
Any push or pull on an object. Force
Which of Newton's laws states that objects at rest stay at rest, and objects in motion stay in motion, unless acted on by an outside force. Newton's 1st Law
The amount of matter in an object. Mass
Units for force and weight. Newton
Units for mass in the metric system gram
The force of gravity acting on a mass. Weight
The use of force to move an object some distance. Work
How do simple machines make work easier? 1. They reduce the amount of force necessary to do the work. 2. Change the direction the the force applied.
The rate (how fast) at which work is being done. Power
The units for work. Joules
Which of Newton's laws states that the greater the mass of an object, the greater the force needed to accelerate it. Newton's 2nd Law
Which of Newton's laws states "For every action, there is an equal and opposite reaction force"? Newton's 3rd Law
The units for power. Watts
What are the 6 simple machines? Wedge, Pulley, Inclined Plane, Screw, Wheel & Axle, and Level
Created by: Mr. Dornfeld
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