本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)
[单选题]
03.49: A sled slides up a uniform inclin qx.c qmrc3wsw6+qr: 7n(o 969hq vxtce of unkno g 4g1m3z7yc pu.w0t uawn angle. The sled, which started at the bottom of the incline moving at 10.0 m/s, rises to a height of 3.30 m above its starting position and momentarily comes to rest. The sled then slides back down the hill. What is the sled's speed when it returns to its original position at the bottom of the hil gugyzw a4c1tmup .730l?
A. 10.0 m/s
B. 8.1 m/s
C. 5.7 m/s
D. 4.0 m/s
E. It cannot be determined, as θ is required
参考答案: C
本题详细解析:
暂无
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