英语物理题！
一个学生开住一个车，沿著直路行，速度系10.4跟住个学生抛一个ball角度为59度学生噶老师。企佢隔离。但就见到个ball系向上升。老师见到球能升多高！原文Ascienc...
一个学生开住一个车，沿著直路行，速度系10.4
跟住个学生抛一个ball角度为59度
学生噶老师。企佢隔离。但就见到个ball系向上升。
老师见到球能升多高！
原文A science student is riding on a flatcar of a train traveling along a straight, horizontal track at a constant speed of 10.4 m/s.
The student throws a ball into the air along a path that he judges to make an initial angle of 59.0° with the horizontal and to be in line with the track.、
The student's professor, who is standing on the ground nearby, observes the ball to rise vertically. How high does she see the ball rise? 展开
跟住个学生抛一个ball角度为59度
学生噶老师。企佢隔离。但就见到个ball系向上升。
老师见到球能升多高！
原文A science student is riding on a flatcar of a train traveling along a straight, horizontal track at a constant speed of 10.4 m/s.
The student throws a ball into the air along a path that he judges to make an initial angle of 59.0° with the horizontal and to be in line with the track.、
The student's professor, who is standing on the ground nearby, observes the ball to rise vertically. How high does she see the ball rise? 展开
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既然professor看到ball rise vertically，那么horizontal速度就是10.4m/s
vertical速度10.4tan59°
mgh=mv²/2
h=v²/(2g),其中v=10.4tan59°≈17.3m/s，g为重力加速度9.8m/s²
h≈15.3m
vertical速度10.4tan59°
mgh=mv²/2
h=v²/(2g),其中v=10.4tan59°≈17.3m/s，g为重力加速度9.8m/s²
h≈15.3m
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