Module 7 Flashcards
What is force?
A push or pull that acts on an object.
What is friction?
A force that results when surfaces of objects rub against each other and opposes motion.
What is static friction?
Friction that opposes the initiation of motion.
What is kinetic friction?
Friction that opposes motion once the motion has already started.
What is free fall?
The motion of an object when it is falling solely under the influence of gravity.
What is the acceleration due to gravity in metric units?
9.8 m/s.
What is the acceleration due to gravity in English units?
32 ft/s.
What is inertia?
The tendency of an object to resist changes in its velocity.
What is Newton’s first law?
An object in motion (or at rest) will stay in motion (or at rest) until it is acted upon by an outside force.
What is Newton’s second law?
When an object is acted on by one or more unbalanced forces, the net force is equal to the mass of the object times the resulting acceleration.
What is Newton’s third law?
For every action, there is an equal and opposite reaction.
