Home
Back
Kinetic Energy Equation:
| From: | To: |
Kinetic energy with height refers to the potential energy an object possesses due to its position above a reference point, which can be converted to kinetic energy when the object falls. This calculation assumes the object starts from rest and falls under gravity.
The calculator uses the kinetic energy equation:
Where:
Explanation: This equation calculates the maximum kinetic energy an object would have when hitting the ground after falling from height h, assuming no air resistance and starting from rest.
Details: Calculating kinetic energy from height is crucial in physics, engineering, and safety analysis. It helps determine impact forces, design protective systems, and understand energy conservation in mechanical systems.
Tips: Enter mass in kilograms and height in meters. All values must be positive numbers. The calculator assumes standard earth gravity (9.8 m/s²) and objects starting from rest.
Q1: Why is gravity constant at 9.8 m/s²?
A: 9.8 m/s² is the standard acceleration due to gravity on Earth's surface. It may vary slightly at different locations but 9.8 is used as a standard value for most calculations.
Q2: Does this calculation account for air resistance?
A: No, this is a simplified calculation that assumes no air resistance. In real-world scenarios, air resistance would reduce the actual kinetic energy at impact.
Q3: What if the object doesn't start from rest?
A: This equation assumes the object starts with zero initial velocity. If there's initial velocity, additional kinetic energy from that motion must be added.
Q4: Can this be used for any height?
A: For very large heights where gravity changes significantly, this simplified equation may not be accurate. It's best suited for heights where g can be considered constant.
Q5: What are typical units for kinetic energy?
A: Kinetic energy is typically measured in joules (J) in the SI system, where 1 J = 1 kg·m²/s².