Joule to Feet per Second Calculator
Convert energy from Joules (J) to velocity in Feet per Second (ft/s)
How to Convert Joules to Feet per Second
Joules (J) cannot be directly converted to feet per second (ft/s) with a simple numerical factor because joules measure energy and feet per second measures speed—fundamentally different physical quantities. They can only be related in a specific context, like kinetic energy, using mass and the formula KE = 1/2 * m * v².
Energy to Speed Relationship
Quick Trick: To find velocity from energy, use v = √(2 * KE / m) and convert to ft/s!
Understand the Conversion
To convert energy (in joules) into speed (in feet per second), you need to know the mass of the object. The relationship is derived from the kinetic energy equation:
KE = 1/2 * m * v²
Rearranging this gives us the formula for velocity:
v = √(2 * KE / m)
To convert the velocity from meters per second to feet per second, use the conversion factor:
1 m/s = 3.28084 ft/s
Thus, the final formula becomes:
vft/s = √(2 * KE / m) * 3.28084
What Do These Terms Really Mean?
Joule (J) – A Unit of Energy
Joules (J) are a standard unit of energy in the International System of Units (SI). Here’s what you need to know:
- Used to measure energy, work, or heat.
- 1 joule is the energy needed to move a force of 1 newton over 1 meter.
Feet per Second (ft/s) – A Unit of Speed
Feet per second (ft/s) is a standard unit of speed. Here’s what you need to know:
- Used to measure speed in feet traveled per second.
- 1 ft/s is equal to the speed of an object traveling one foot in one second.
