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]
If one object has a greater speed6- i crmhkoq.) than a second6zvq-6by7;pw z jef 3vb *onc. object, does the first necessarily have a greater acceleration? Explain, us .-6ecyn wv7*;bbfqoj3zvp 6z ing examples.
参考答案: There is no
general relationship between the magnitude of speed and the magnitude of
acceleration. For example, one object
may have a large but constant speed. The
acceleration of that object is then 0.
Another object may have a small speed but be gaining speed, and
therefore have a positive acceleration.
So in this case the object with the greater speed has the lesser
acceleration.
Or consider two objects that
are dropped from rest at different times.
If we ignore air resistance, then the object dropped first will always
have a greater speed than the object dropped second, but both will have the
same acceleration of 9.80$m/s^2$.
本题详细解析:
暂无
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