Physics Unit26: Special Theory of Relativity (id: ba60a0532)

[单选题]
A boat can travel 4.0 m/s in still water. With whath2 ud*:u2t atd-gm 6hbpnc1 2t speed, ret gy3ur2,;)xc c r6l0k(ixjwhlative to the shore, does it move in a river that is flowing xtx(30lwrr,g6)kh2uc;cy j iat 1.0 m/s if the boat is heading downstream?

A. 3.0 m/s
B. 4.1 m/s
C. 4.8 m/s
D. 5.0 m/s


参考答案:  D


本题详细解析: 暂无