Physics - Newton's Law of Motions

volume/density of an object

Mass

all force from all directions is equal

Unbalanced Force

For every force (action) there is an equal and opposite force (reaction)

Law of Interaction

how fast the object is in related to direction

Velocity

gravity related - push/pull force

Force

the rate of change of velocity with time

Acceleration

A body at rest will remain at rest and a body in motion will remain in motion unless acted upon by a net force

Law of Inertia

is inversely proportional to the mass of the body

Law of Acceleration

The external or outside force

Net Force

_ = ma

Force

composition inside of an object/relation to gravity

Weight

_ = F over m

Acceleration

_ = F over a

Mass

If you increase the force on an item without changing the mass, you increase _

Acceleration

In Newton's Law of Motion, force can make an object change direction

Second

_ can cause Acceleration

Forces

If you increase the _ on an item without increasing the force, you can't increase the acceleration

Mass

It is much easier to carry your backpack when it is empty rather when it's full of textbooks.

Law of Acceleration

When you are standing in a subway train and the train suddenly stops but your body continues to move forward

Law of Inertia

When you give your friend a lift on your bike you have to pedal harder and faster to keep the same speed as you had when you were on your bike alone

Law of Acceleration

Two bumper cars collide into each other and each car jolts backwards

Law of Interaction

A boy is going down the slide. As he reaches the bottom, friction causes him to slow down and stop

Law of Inertia

the rate at which work is done

Power

capacity to do work

Energy

it is the measure of the energy transfer

Work

energy at rest

Potential Energy

transfer of energy from moving object

Kinetic Energy

__ = fd (force) (distance)

Work

-- = W over t

Power

-- = mgh

PE (Potential Energy)

-- = 1/2 mv squared

KE (Kinetic Energy)

Unit for work

Joule/s

Unit for power

J/s (Joules per second)

Unit for KE and PE

J (Joule/s)

2 Alter units for power

1. W (Watts)
2. Hp (Horsepower)