Chapter 3: Forces and Newtons Laws of Motion

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.

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.

interaction

A(n) ________ is required between that object and another object.

gravitational field strength

The ________ (g) is the same as the acceleration due to gravity in free fall and projectile motion.

Free body diagrams

________ are a visual tool used to represent the forces acting on an object.

state of motion

The ability of an object to resist a change in its ________ is called inertia.

Weight

________ is the most common force and has its own formula.

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Balanced forces

cause no change in motion

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unbalanced forces

cause an object to start moving, stop moving or change direction. The net force is greater than zero.

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less inertia

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unbalanced forces

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If there is more mass, then there is...

more inertia

A rocket takes off because of which law?

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Because of Newton's 3rd Law- action and reaction

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Speed

the rate at which an object moves.

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Acceleration

the rate at which velocity changes.

A box is pulled to the right with 6 N and to the left with 6 N. The net force is _______________

0 N

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Gravitational force

The attractive force that exists between all objects with mass

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Inertia

any physical object to any change in its state of motion including changes to its speed and direction or the state of rest

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Friction

A force that opposes motion between two surfaces that are in contact

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