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memorize.ai (lvl 286)

Section 1

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Speed

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Physics

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Date created

Mar 1, 2020

Cards (39)

Section 1

(39 cards)

Speed

Front

the distance traveled by an object in a given amount of time.

Back

Newton's Third Law of Motion (Example)

Front

as the thrust of a rocket pushes down on Earth's surface, the rocket launches upward into the atmosphere

Back

Balanced Force

Front

Two forces in opposite directions. Net force is zero and the motion of the object does not change.

Back

Magnitude

Front

The strength or size of an object or force.

Back

vector

Front

An quantity that has a magnitude and direction

Back

Newton's First Law of Motion (Example)

Front

when a car suddenly stops and your head continues to move foward even though your body is stopped by the seat belt

Back

Force

Front

A push or pull on an object that can cause a change in movement

Back

newton's first law

Front

law of inertia

Back

Newton's Third Law of Motion (Definition)

Front

for every action there is an equal and opposite reaction; there is a reaction force that is equal in size but opposite in direction.

Back

Motion

Front

A change in the position of an object over time.

Back

Newton

Front

A measurement of force

Back

newton's law of gravitation

Front

The force of gravity between two very dense objects can be described inversely by the distance between them.

Back

Acceleration

Front

The rate of change in velocity. Can be a change in direction, positive (speeding up) or negative (slowing down).

Back

Net Force

Front

The total of all the forces acting on an object

Back

newton's second law

Front

F=ma

Back

This force goes in the opposite direction of motion

Front

Friction

Back

displacement

Front

the total distance traveled by an object regardless of direction

Back

Example of velocity

Front

Nemo swims 37 m/s South to Wallaby Way in Australia.

Back

Gravitational pull between object

Front

the relationship where the force between to objects is inversely 1/r related to the distance between them.

Back

Newton's First Law of Motion (Definition)

Front

an object at rest will stay at rest unless acted upon by an outside unbalanced force; an object in motion will stay in motion unless acted upon by an outside unbalanced force.

Back

Newton's 3rd law

Front

Every action has an equal and opposite reaction

Back

Inertia

Front

the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force

Back

Unbalanced Force

Front

A force that is not equal in size and opposite in direction.

Back

Frictional force

Front

=coeffiecent of friction xmxg

Back

Gravity

Front

A force that pulls objects together

Back

Displacement vs Time Graph

Front

Shows the distance an object travels in a certain amount of time. slope is velocity

Back

distance

Front

the amount traveled from a certain spot.

Back

A boat moving at 4m/s north, with a wind coming from the east at 3 m/s gives you a net vector of what?

Front

5m/s NE

Back

Contact forces

Front

Contact forces work when two or more objects are touching. Some examples of this are: friction, air resistance, tension in ropes and normal contact force. When these two or more objects interact there is a force on both of them and is equal or opposite of the other object.

Back

Velocity

Front

speed of an object and its direction of motion; changes when speed, direction or both changes

Back

Friction

Front

The force between objects that resists motion - always slows down motion

Back

velocity

Front

change in displacement over change in time vector

Back

acceleration

Front

Change in velocity over change in time

Back

Example of speed

Front

Nemo swims 58 m/s

Back

Mass

Front

The total amount of matter in something.

Back

Non-contact forces

Front

Non-contact forces happen when two or more objects exert a force on each other but are not touching. Some examples of these are: magnetic force, gravitational force, electrostatic force. When these two or more objects interact with each other there is a force produced on all of them that is equal or opposite.

Back

F = m x a

Front

Formula for Force

Back

Newton's Second Law of Motion (Example)

Front

the force applied to a roller coaster car in addition to the mass of the car determines the acceleration of the car; more force = more acceleration

Back

Newton's Second Law of Motion (Definition)

Front

the greater the force applied to an object, the greater the acceleration; the smaller the mass of an object, the greater its acceleration when force is applied; only an unbalanced force can cause objects to accelerate

Back