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Fifth Grade Physics

Vocab terms for fifth grade force and motion

A simple machine that gives leverage by creating distance from the work. Lever
The location of an object. Position
A measurement of distance over time. Speed
A push or pull of an object. Force
Some examples of force. Lift, Drag, Gravity, Friction, Thrust, push, pull, kick
What is the speed of a golfball that moves 35 meters in 5 seconds? Speed=distance/time...7 meters per second.
Why is a compass a useful tool for describing motion? It describes the direction of an object.
A measurement of speed and direction. Velocity
The motion of an object can be understood by examining what? All of the forces acting on the object.
The forward motion of a shark is caused by which force? Thrust...think about the fin of the shark. what is it doing? Thrusting the shark forward.
The capacity to do work. The ability to do work. Energy
Energy when it is being used. Kinectic energy
Energy that is being stored. Potential energy
Something that replaces human effort. Machines...simple or compound
THe force that pulls all objects towards the center of the Earth. Gravity
Name some forms of energy. Solar, wind, sound, heat, light, chemical, mechanical,
What is needed to operate a machine? Energy
Why does a machine that lifts boxes off the ground need energy? It needs energy to pull against the force of gravity.
Forces that have a net force of zero. Playing tug of war with your identical twin! Balanced Force
Forces that have a net force that is not zero. Playing tug of war with someone twice your size. Unbalanced Force
What is net force? The total force that is acting on an object.
If a force is balanced what kind of motion will happen? No movement.
What type of force allows you to stand up in a chair? Balanced
A ball has two forces acting on it. One force is pushing it to the left, and a larger force is pushing it to the right. IN which direction will the ball move? Right
The tendency for an object to remain at rest or in motion unless it is acted on by a force. Newton's 1st Law Inertia
Product of the mass and velocity of an object. Momentum
What does Newton's second law of motion state? That the force an object needs to move is directed to the mass of the object and the speed of the object. Force=mass x acceleration
The force that acts on an object to stop its motion. Friction
What is changed by how fast an object is moving and how much mass that object has? Momentum
A soccer ball rolls across a grassy field and comes to a stop. What caused the soccer ball to stop? Friction
Imagining and creating the best way to solve a problem. Design
What is a distance vs time graph measure? The movement of an object.
A line on the distance vs time graph moving up means... The object is accelerating.
A line on the distance vs time graph moving down means... The object is decelerating.
A horizontal line on the distance vs time graph means the object is... standing still.
The force, or drag, of air pushing against the motion of an object. Air resistance.
What best describes the direction of the Earth's gravitational force? It pulls objects closer to Earth.
Created by: cgsmith
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