1. What is Kinetic Energy?

Kinetic energy is the energy possessed by an object due to its motion. It is a scalar quantity that depends on both the mass and velocity of the object, following the formula KE = (1/2) × m × v².

2. How Does the Calculator Work?

The calculator uses the kinetic energy formula:

Where:

• \( KE \) — Kinetic Energy (Joules)
• \( m \) — Mass of the object (kilograms)
• \( v \) — Velocity of the object (meters per second)

Explanation: The kinetic energy increases with the square of velocity, meaning doubling the velocity quadruples the kinetic energy, while doubling the mass only doubles the kinetic energy.

3. Importance of Kinetic Energy Calculation

Details: Calculating kinetic energy is essential in physics for understanding energy conservation, collision dynamics, mechanical work, and various engineering applications including vehicle safety design and sports science.

4. Using the Calculator

Tips: Enter mass in kilograms and velocity in meters per second. Both values must be valid (mass > 0, velocity ≥ 0).

5. Frequently Asked Questions (FAQ)

Q1: What are the SI units for kinetic energy?
A: The SI unit for kinetic energy is the Joule (J), where 1 J = 1 kg·m²/s².

Q2: Can kinetic energy be negative?
A: No, kinetic energy is always non-negative since both mass and the square of velocity are always non-negative quantities.

Q3: How does kinetic energy relate to work?
A: The work-energy theorem states that the net work done on an object equals its change in kinetic energy.

Q4: What is the difference between kinetic and potential energy?
A: Kinetic energy is energy of motion, while potential energy is stored energy due to position or configuration.

Q5: Does kinetic energy depend on direction?
A: No, kinetic energy is a scalar quantity and depends only on the magnitude of velocity, not its direction.