Physics - 1st rotation

Speed

the rate at which something moves

Speed formula

s = distance/time

Distance

the length of a path of the object has taken

Distance formula

d = speed x time

Time

period during which an action occours

Time formula

time = distance/speed

Distance time graphs

Shows how far an object has traveled over time. Distance is on the vertical axis, time is on the horizontal axis.

Speed time graphs

Shows how an object’s speed changes over time. Speed is the vertical axis, time is the horizontal axis

Acceleration (m/s²)

rate at which speed changes with time, caused by an unbalanced force  

Acceleration formula

change in speed (m/s) / time period (s)

Velocity

how fast an object is moving in a specific direction

Displacement

distance between where an object started vs where it ended

Force

a push or a pull on an object due to its interactions with another object. They can cause objects to move, stop moving, change directions or shape.

Contact force

acts on a force with physical contact

Non contact force

acts on an object without physical contact

Balanced force

forces equal in magnitude but opposite in direction, resulting in no change in motion or shape

Unbalanced force

forces not equal in magnitude and opposite in direction, causing a change in motion or shape.

Net force

sum of all forces acting on an object, determining its overall motion

Applied force

A contact force where someone or something exerts a force onto another object

Gravity

A non contact force with objects that have a mass, causing them to pull towards eachother

Normal force

support force exterted on an object that is in contact with another stable object

Friction

force exterted when 2 objects are in contact as 1 tries to move across the other. This slows the object down

Tension

force transmitted when an object is pulled tight by forces in opposite directions

Spring force

exerted by a compressed or stretched object that resists deformation. It will return the object to its original state after the deforming force is removed

Electrical force

acts between two objects that are charged, causing them to attract or repel.

Newtons first law

an object undergoing constant motion will remain in constant motion unless acted on by an unbalanced force

Inertia

An objects resistance to change its motion. Objects of a larger mass have more inertia

NEwtons second law

the net force acting on an object is equal to its mass multiplied by its acceleration.

Formula for second law

F = ma

Newtons third law

For every action, there is an equal and opposite reaction.

action reaction forces

Action-reaction force pairs are explained by Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. This means that whenever one object exerts a force on another, the second object exerts an equal force in the opposite direction on the first object. These forces always come in pairs, are equal in strength, and act in opposite directions, but they act on different objects. Because of this, they do not cancel each other out. For example, when you push against a wall, the wall pushes back on you with the same amount of force in the opposite direction. This principle applies in many everyday situations, such as walking, swimming, or how rockets launch.