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 skater at l3.6cau*ignc c n.2rh rest on a frictionl/d ofv6,zm 4 j,jymlsn9 qg6hh7 )7buless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes tdmg)mh zo /f7qvnhj49j,sy u676l,lbhe 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
| 
