Ima

Definition:

A physical equation is a mathematical statement that shows the relationship between physical quantities.

Main points:

Motion

• Speed = Distance ÷ Time

• Distance = Speed × Time

• Time = Distance ÷ Speed

Force and motion

• Force = Mass × Acceleration

  • Weight = Mass × Gravity

Matter

• Density = Mass ÷ Volume

Energy

• Work = Force × Distance

• Kinetic Energy = ½ × Mass × Speed²

• Potential Energy = Mass × Gravity × Height

Heat

• Heat Energy flows from hot object to cold object

• Sound

• Sound needs a medium (air, water, solid) to travel

Electricity

• Current = Voltage ÷ Resistance

Fun Fact:

Physics equations help us measure, compare, and understand how things move, work, and change!