Physics Flashcards

(26 cards)

1
Q

1st law

A

(law of inertia)
An objects motion remains until acted upon by another unbalanced force

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2
Q

Inertia

A

The resistance to any change in motion

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3
Q

Mass

A

Amount of matter in an object

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4
Q

Weight

A

Force of gravity pulling on an object (on earth its 9.8 m/s/s)

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5
Q

2nd law

A
  1. An object will accelerate in the direction of the unbalanced force that acts upon it
  2. The higher the mass the greater the force needed to accelerate the object
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6
Q

Force

A

A force is a push or a pull on an object that can change its motion, speed, direction, or shape

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7
Q

Unbalanced force

A

a net force acting on an object that is not equal and opposite, meaning the forces do not cancel each other out

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8
Q

Newtons third law

A

for every action, there is an equal and opposite reaction, meaning that forces always exist in pairs.

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9
Q

Action force

A

the initial force applied by one object on another, which is always paired with an equal an opposite reaction force

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10
Q

Reaction force

A

the equal and opposite force that an object exerts back on another object when a force is applied

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11
Q

Energy

A

ability to work or cause change

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12
Q

Energy transfer

A

The movement of energy from one object or system to another

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13
Q

Energy transformation

A

The change of energy from one form to another

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14
Q

Kinetic energy

A

the energy of motion, meaning it is the energy an object possesses because it is moving

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15
Q

Potential energy

A

energy stored in an object due to its configuration, state or position

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16
Q

Types of kinetic energy

A

Mechanical, electric, thermal, sound, light

17
Q

Types of potential energy

A

chemical, elastic, nuclear, gravitational

18
Q

Balanced force

A

two or more opposing forces acting on object, resulting in a net force of zero and no change in the object’s motion

19
Q

Speed

A

the rate at which someone or something moves or operates or is able to move or operate.

20
Q

Velocity

A

the speed of something in a given direction.

21
Q

Distance

A

the length of the space between two points.

22
Q

Displacement

A

Change in an objects positon in a straight line

23
Q

Acceleration

A

the rate at which an object’s velocity changes over time

24
Q

Deceleration

A

Reduction in speed or rate

25
Gradient
an inclined part of a road or railway; a slope.
26