Motion
Speed over a time interval.
What is average speed?
A force is a push or
What is a pull?
The scientist that came up with the Laws of Motion.
Who is Isaac Newton?
Sloped surface, sometimes called a ramp.
What is an inclined plane?
An object with a groove, like a wheel, with a rope or chain running through the groove.
What is a pulley?
Speed at any instant.
What is instantaneous speed?
An object will not change its motion unless a force acts on it.
What is Newton's First Law of Motion?
For every action, there is an equal and opposite reaction.
What is Newton's Third Law of Motion?
A rod or plank that pivots about a fixed point.
What is a lever?
What is a wedge?
The speed of an object and its direction of motion.
What is velocity?
Force = Mass x Accerlation
What is Newton's Second Law of Motion?
Two or more forces where their effects cancel each other and they do not cause a change in an object's motion.
What is a balanced force?
Made of two round objects that are attached and rotate together about the same axis.
What is a wheel and axle?
An inclined plane wrapped around a post.
What is a screw?
Two ways to change your velocity.
What are speed and direction?
Two or more forces where the effects of the forces don't cancel each other.
What is unbalanced forces?
A force that resists motion between two surfaces that are in contact.
What is friction?
Mass is related to this.
What is inertia?
Simple machines that make up an ax.
What is a lever and a wedge?
The change in velocity divided by the time needed for the change to occur.
What is acceleration?
Tendency to resist a change in motion.
What is inertia?
A car slides on an icy road.
What is Newton's First Law of Motion?
The number of times the applied force is increased by a machine.
What is mechanical advantage?
Output force between the fulcrum and input force, like a wheelbarrow.
What is a second class lever?