alleryIf the speed of a vehicle doubles, its kinetic energy becomes:
AFour times
BTwo times
CHalf times
DNine times
Answer & Solution
Correct answer: A. Four times
1. Kinetic energy is half of mass times speed squared.
2. Doubling the speed squares to four.
3. So the kinetic energy becomes four times its old value.
4. The answer is four times.
_Source: syllabus Science, Ch 7 'Work, Energy, and Simple Machines'_
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