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]
99.19: A 50 kilogram x*3qncqz61 *2ee-+78i e fuvpznio oh30ljdoq* + rhuucvn -7skater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stuo73c 0*uqd+-jvln rh atement describes the subsequent motion?
A. 0.4 m/s in the same direction as the ball.
B. 0.4 m/s in the opposite direction to the ball.
C. 2 m/s in the same direction as the ball.
D. 4 m/s in the same direction as the ball.
E. 4 m/s in the opposite direction to the ball.
参考答案: B
本题详细解析:
暂无
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