At What Speed Must an Object Be Moving in Order

question 5

Multiple Choice

At what speed must an object be moving in order that it has a kinetic energy 2.6 times its rest energy? (c = 3.00 × 10⁸ m/s)

• A)2.77 × 10⁸ m/s
• B)2.17 × 10⁸ m/s
• C)2.88 × 10⁸ m/s
• D)1.15 × 10⁸ m/s
• E)​2.55 × 10⁸ m/s

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