Effects of Forces Flashcards
Newton’s First Law of Motion
An object in motion tends to stay in motion unless an external force acts upon it. If the object is at rest, it will remain at rest until a resultant force acts upon it.
Newton’s Second Law of Motion
When a resultant force acts on an object, it will accelerate in the direction of the force. The acceleration is directly proportional to the resultant force and, inversely proportional to its mass.
The mathematical equation for Newton’s Second Law of Motion
Resultant Force = Mass x Acceleration
What are contact forces?
These are forces in which two objects touch each other.
What are non-contact forces?
Objects do not have to be touching to exert forces on each other.
What are non-contact forces?
Objects do not have to be touching to exert forces on each other.
What is mass?
The amount of matter in an object.
What is weight?
The downward force exerted by the earth on an object.
What is tension?
The state of being stretched tight.
What is Friction?
The force exerted by a surface on an object that opposes the motion of the object acting parallel to the surface.
What is Momentum?
a physical quantity that depends on the mass of an object and how fast it is going.
The equation for Momentum?
Momentum (p) = mass (m) x velocity (v)
What is the unit for Resultant Force?
Newtons (N)
