At What Speed Must an Object Be Moving in Order

question 15

Multiple Choice

At what speed must an object be moving in order that it has a kinetic energy 2.50 times its rest energy? (c = 3.00 × 10⁸ m/s)

• A) 2.52 × 10⁸ m/s
• B) 1.91 × 10⁸ m/s
• C) 2.75 × 10⁸ m/s
• D) 2.87 × 10⁸ m/s

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