本题目来源于试卷: Newton’s law of motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
99.16: Which of the followin5odhia9z0 + 7nps jv*fg principles best explains why large tractor-ofuae j 0 ez*0yy w83cf2k6:dvs1e6xq trailer trucks generally *c j66qzdeye fs0 w:e082 1fo3aukyxvaccelerate much more slowly that automobiles?
A. To every action there is an equal reaction.
B. Everybody attracts every other body in the universe.
C. A force is necessary to change the speed or direction of a body.
D. The total momentum of interacting bodies is always conserved.
E. The acceleration of a body is inversely proportional to its mass and directly proportional to the external force acting on the body.
参考答案: E
本题详细解析:
暂无
| 
