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22 Terms
1
Isaac Newton
________ published his work, the Mathematical Principles of Natural Philosophy, in 1687, revolutionizing the rational study of mechanics by introducing mathematical principles that all of nature was considered to obey.
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2
circular path
If the centripetal force acting on an object is not sufficient to keep it moving in a(n) ________, the object will move outwards, away from the center of the circle.
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3
outward ones
Radially inward forces are positive and ________ are negative.
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4
Weight
________ is a vector force that depends on an object's location in the universe, while mass is a scalar measure of an object's inertia.
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5
gravitational field strength
The ________ (g) is the same as the acceleration due to gravity in free fall and projectile motion.
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6
Free body diagrams
________ are a visual tool used to represent the forces acting on an object.
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7
minimum coefficient of friction
A car (mass M) takes a turn (of radius R) on a flat road without any slipping or sliding at a constant speed S. Find an expression for the ________ needed between the wheels and road.
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8
Centripetal force
________ is the force that keeps an object moving in a circular path.
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9
state of motion
The ability of an object to resist a change in its ________ is called inertia.
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10
unbalanced force
Forces that produce a nonzero net force, which changes an object's motion
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11
balanced force
Forces on an object that combine to give a zero net force and do not change the motion of the object.
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12
friction
A force that opposes motion between two surfaces that are in contact
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13
sliding friction
Friction that occurs when one solid surface slides over another
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14
rolling friction
Friction that occurs when an object rolls over a surface
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15
terminal velocity
The constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
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16
inertia
An objects resistance to change its motion
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17
free fall
The motion of a falling object when the only force acting on it is gravity
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18
air resistance
the fluid friction experienced by objects falling through the air
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19
net force
The combination of all forces acting on an object
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20
Newton's second law
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
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21
Newton's third law
For every action by a force, there is an equal and opposite reaction by another force.
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22
newton's first law
An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
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