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Forces

QuestionAnswer
What is a Force? a push or pull exerted on an object
What is a Newton? a unit of measure that equals that
Define Net Force? The overall force on an object wham all the individual forces action on it are adding
Unbalanced forces are? Forces that produce a nonzero net force which changes an objects motion
What is the SI unit for force? Newtons
What is Free fall? When the only force action on an object is gravity
Mass is? a measure of the amount of matter in an object
Define Gravity? the force that pulls objects together
Terminal Velocity is? The greatest velocity that an object can reach
What type of motion is in act where a basketball is thrown in a hoop? Projectile Motion
What is Friction? The force that two surfaces exert on each other
What are the two factors that friction depends on? How hard the surfaces pouch together and the type of surface it is
What is Static Friction? The friction that acts on objects that are not moving
What is Sliding Friction? when two solid surface slide over each other
What is Rolling Friction? When an object rolls across a surface
What is Fluid Friction? When a solid object moves through a fluid or gas
The law of universal gravitation states? That the force of gravity acts between all objects in the universe
What two factors affect the gravitational attraction between objects? Mass and distance
What is the definition of Weight? The force of gravity on a person or object at the surface of a planet
What is Newtons First Law of Motion? An object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless it is acted upon by an unbalanced force.
What is it when the tendency of an object to resist a change in motion? Inertia
What is Newtons Second Law of Motion? Acceleration depends on the objects mass and on the net force acting on the object
What is Newtons Third Law of Motion? If one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object. (for every action there is an equal but opposite reaction.)
What is Momentum? A characteristic of a moving object that is related to the mass and the velocity of the object
How can momentum be determined? By multiplying the objects mass and velocity
What is the law of conservation of momentum? the total momentum of objects that interact does not change.
Created by: dukesl01
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