Physics

Velocity/Time =

Acceleration

What information does the area below a velocity/time or a speed/time graph provide?

The total distance covered

Displacement/Time =

Velocity

What information does the gradient of a displacement-time graph provide?

Velocity

U

Initial Velocity

H

Height

G / A

Acceleration due to gravity (9.8 m/s²)

T

Time

Work =

Distance x force

How do you calculate efficiency?

( Useful energy/input energy ) * 100

mgh =

potential energy

Power =

Work done/time

potential energy =

mgh

Displacement is a _____ quantity

Vector

Kinetic Energy =

½ x mass x velocity²

√2gh​

Velocity (in free fall)

Average Velocity =

Speed/time

Weight Force =

Mass/gravity

Power =

Work/time

Unit of Acceleration

m/s²

Equations of motion

• a = (v-u)/t

• v = u + at

• s = ut + ½ at²

• v² = u² + 2as

Name 5 vector quantities

• velocity

• acceleration

• displacement

• force

• weight

km/h ?—>? m/s

To convert kilometers per hour to meters per second, divide by 3.6.

Intertia

The tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Newton’s First Law

An object will stay in its state of rest or motion unless acted upon by another force.

The Law of Conservation of Energy

Energy cannot be created or destroyed, only transformed from one form to another, or transferred.

Newton’s Second Law

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Newton’s Third Law

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