本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学
[问答题]
Can the velocity of an object be negative when its ac2mv .x1bhxk h-cedtdq2 eq.rx-4n dr67dw zn0bu0ff8ncp( ;fm 6 leration is positive? What about vice ved;frn6ddq0 6ftcw0buz84x. n7 nmr -(epdqf2rsa?
参考答案: The velocity of an
object can be negative when its acceleration is positive. If we define the positive direction to be to
the right, then an object traveling to the left that is having a reduction in
speed will have a negative velocity with a positive acceleration.If again we define the
positive direction to be to the right, then an object traveling to the right
that is having a reduction in speed will have a positive velocity and a
negative acceleration.
本题详细解析:
暂无
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