This MayeleCalc guide explains the concept in plain language so you can use the related calculator with better context and confidence. Work through each section, review the practical example, and check the common mistakes before applying the result.
Potential energy depends on position
Near Earth's surface, gravitational potential energy is mass multiplied by gravitational acceleration and height. The reference height determines zero.
Kinetic energy depends on speed
Kinetic energy equals one-half mass multiplied by speed squared. Doubling speed multiplies kinetic energy by four when mass stays constant.
Energy changes form
As an object falls, gravitational potential energy can become kinetic energy. In ideal calculations, total mechanical energy remains constant.
Real systems transfer energy
Friction, air resistance, sound, and deformation transfer energy into other forms, so an ideal calculation may overestimate final speed.
Practical example
See the idea in action
If a vehicle travels 120 kilometres in 2 hours, its average speed is 120 ÷ 2 = 60 km/h. This represents the full journey, including any slower sections or stops included in the time.
Common mistakes to avoid
- ×Mixing metres with kilometres or seconds with hours
- ×Confusing average speed with speed at one instant
- ×Leaving out direction when the question asks for velocity
Key takeaways
- ✓Convert units before inserting values
- ✓Rearrange the equation to match the unknown
- ✓Check whether the question asks for an average or instantaneous value
Put the idea into practice
Open the calculator library, choose the relevant tool, and compare realistic scenarios using the method from this guide.
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