物理 - 2026 进行中

科目: 物理
级别: VI
类别: 大学生
测试题目: 英语
问题示例: A 5.0 kg box is initially at rest on a frictionless floor. A horizontal force of 15 N acts on it for 4.0 s. What speed does the box reach? 3.0 m/s, 12.0 m/s, 19.0 m/s, 60.0 m/s