Question
Download Solution PDFA ball of mass 50 grams is moving with a velocity of 15 m/s. What is its kinetic energy?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 5.625 J.
Key Points
- The formula for calculating kinetic energy is KE = (1/2)mv², where m is the mass and v is the velocity.
- Given, the mass (m) of the ball is 50 grams, which is equivalent to 0.05 kilograms (since 1 kg = 1000 grams).
- The velocity (v) of the ball is given as 15 m/s.
- Using the formula: KE = (1/2) * 0.05 kg * (15 m/s)².
- This simplifies to: KE = (1/2) * 0.05 * 225.
- Further simplifying: KE = 0.025 * 225 = 5.625 Joules.
- Therefore, the correct answer is 5.625 J.
Additional Information
- Kinetic Energy
- Kinetic energy is the energy possessed by an object due to its motion.
- The unit of measurement for kinetic energy is the joule (J) in the International System of Units (SI).
- It is a scalar quantity, meaning it has magnitude but no direction.
Last updated on Jun 16, 2025
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