本题目来源于试卷: 美国2021年物理杯赛真题 PHYSICS BOWL 2021，类别为 美国物理杯赛(Physics Bowl)
[单选题]
In a panic, you squeeze the brake handle on your bicycle, lock up the rear wheel, and skid a certaindistance on a straight, level path before stopping. If you had been traveling twice as fast, what distance would you have skidded, under the same conditions?
A. You would have skidded 4 times farther.
B. You would have skidded twice as far.
C. You would have skidded 1.4 times farther.
D. You would have skidded 8 times farther.
E. It is impossible to tell from the information given.
参考答案: A
本题详细解析:
$v^2=v_0^2+2a∆x$
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