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resistance of an object to a change in its motion . inertia. forces on an object that combine to give a zero net force and do not change the motion of the object . balanced force. the rate of change in position at a given point in time. instantaneous speed.
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forces on an object that combine to give a zero net force and do not change the motion of the object balanced force
the rate of change in position at a given point in time instantaneous speed
If two balls collide and stick, it is an… Inelastic collision
the total distance an object travels divided by the total time of travel average speed
states that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by the mass Newton's second law of motion
If two balls collide and bounce, it is an… elastic collision
force that opposes the motion between two touching surfaces friction
frictional force that prevents two surfaces from sliding past each other static friction
frictional force that opposes the motion of two surfaces sliding past each other sliding friction
Who categorized motion as either natural or violent motion? Aristotle
attractive force between two objects that depends on the masses of the objects and the distance between them gravity
acceleration of an object toward the center of a curved path or circular path centripetal acceleration
states that when one object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction Newton’s Third Law
property of a moving object that equals its mass times its velocity momentum
a push or pull first exerting force on a second What is a force?
The overall force of an object after all of the forces are added together. Net force
Equal forces acting on one object in an opposite directions. Balanced forces
When you add equal forces exerted in opposite directions, the net force is _____. zero
An object at rest will remain at rest, and an object that is moving at constant velocity will continue moving at constant velocity unless acted upon by a unbalanced force. Newton's First Law of Motion
What is mass? The amount of matter in an object.
How can mass be defined in terms of inertia? Mass can be defined as a measure of the intertia of an object.
What is Newton's Second Law of Motion? F=ma The net force of an object is equal to the product (addition) of its acceleration and mass.
P stands for momentum
p= p=mv
Change in p= Change in p = F*t
F= F=ma
p initial = p final
How does an increase of force affect acceleration? An increase of force causes an increase in acceleration.
What two factors does friction depend on? 1. The types of surfaces involved 2. How hard the surfaces push together
What is acceleration due to the force of gravity? 9.8 m/s squared
An object that is thrown and falls freely is called… A Projectile
The greater surface area of an object, the greater the ________ through the air. Air resistance
What is weight? The force of gravity on an object at the surface of a planet.
The greatest velocity a falling object reaches is the … terminal velocity
How is weight different than mass? Weight is the measure of the force of gravity and mass is a measure of the amount of matter in a object.
Weight is measured in ________. Newtons or pounds
Mass is measured in Kilograms, not pounds
The gravitational force of attraction varies with what two factors? Mass + Distance
What is the equation you use to determine momentum? mass x velocity
What of the law of conversation of momentum state? The total momentum of the objects that interact does not change.