When a driver traveling at 30 MPH accelerates to 60 MPH, the impact is:
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4 times greater.
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3 times smaller.
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2 times greater.
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2 times smaller.
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Explanation
The faster you drive, the greater the impact or striking power of your vehicle. Doubling your vehicle's speed increases its impact force by four times.
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Other questions in the same category: Collision Prevention and Response
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This question appears in the following DMV practice tests: