SOLUTION: Which has more kinetic energy: a 0.0013-kg bullet traveling at 399 m/s or a 7.8 x 10^7-kg ocean liner traveling at 12 m/s (23 knots)? the ocean liner has greater kinetic energy

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Question 1205989: Which has more kinetic energy: a 0.0013-kg bullet traveling at 399 m/s or a 7.8 x 10^7-kg ocean liner traveling at 12 m/s (23 knots)?
the ocean liner has greater kinetic energy

Justify your answer.
Ek-bullet = 103.48 J (this one is correct)
Ek-ocean liner = J (I cannot find the answer for this one)
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.

The ocean liner kinetic energy is  %28m%2Av%5E2%29%2F2 = %287.8%2A10%5E7%2A12%5E2%29%2F2 = 5616000000 joules.


Now compare these two numbers, 103.48 Joules and 5616000000 joules, and decide which is greater.

Answered.

All you need to know to answer this question is the standard formula
for kinetic energy from any Physics textbook.