Motion
Speed
This sleepy term describes an unmoving object until an unbalanced force acts on it.
At rest.
Equals an object's mass times its acceleration
Force
This is equal and opposite to every force.
Reaction Force
Something that makes work easier by changing the way the user accomplishes work.
Simple Machine
Acceleration
When forces counteract each other and cancel each other out.
Balanced Forces
Due to the size of this property, you must be sure to avoid stopping on train tracks.
mass
A description of the reaction force to a batter hitting a baseball off of a tee.
The ball hits back against the bat.
Equals force times the distance it is applied over.
Work
Is an objects speed with a corresponding direction.
Velocity
The result of unbalanced forces acting on an object.
Acceleration
The force required to cause a 5kg weight to accelerate at 20 m/s^2
100 Newtons
A rocket engine creates 20,000 lb of downward force during liftoff. This is the size and direction of the reaction force pushing back on the engine.
2,000 lb. upward
Consists of two ends and a fulcrum
A lever
Is a specific type of the word it sounds the opposite of.
Decelleration
A property of matter explained by Newton's first law.
Inertia
The force required to cause a 20 kg weight to accelerate at 10 m/s^2
200 Newtons
Earth's gravity exerts a 175 pound downward force on a person. This is the gravitational force exerted by that person on earth.
175 pounds upward
This slanted surface makes lifting easier by increasing the distance of movement required.
Inclined Plane (ramp)
100 km/hour North describes this characteristic of motion.
Velocity
This force resists motion between surfaces in contact with each other.
Friction
The metric unit for force.
Newtons
Along with direction, all forces have this "mega" property.
Magnitude
A ratio that tells users how much the machine makes work easier.
Mechanical Advantage