求解英文物理题(关于运动学)
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求解英文物理题(关于运动学)
A model rocket is launched straight upward
with an initial speed of 51.9 m/s.It acceler-
ates with a constant upward acceleration of
1.58 m/s2
until its engines stop at an altitude
of 150 m.
1.What is the maximum height reached by
the rocket?The acceleration of gravity is
9.81 m/s2.
Answer in units of m.
2.When does the rocket reach maximumheight?
Answer in units of s.
3.How long is the rocket in the air?
Answer in units of s.
A model rocket is launched straight upward
with an initial speed of 51.9 m/s.It acceler-
ates with a constant upward acceleration of
1.58 m/s2
until its engines stop at an altitude
of 150 m.
1.What is the maximum height reached by
the rocket?The acceleration of gravity is
9.81 m/s2.
Answer in units of m.
2.When does the rocket reach maximumheight?
Answer in units of s.
3.How long is the rocket in the air?
Answer in units of s.
![求解英文物理题(关于运动学)](/uploads/image/z/15606458-26-8.jpg?t=%E6%B1%82%E8%A7%A3%E8%8B%B1%E6%96%87%E7%89%A9%E7%90%86%E9%A2%98%EF%BC%88%E5%85%B3%E4%BA%8E%E8%BF%90%E5%8A%A8%E5%AD%A6%EF%BC%89)
我用中文答,可以吧!
v2-v'2=2as
v'2=3167.61
0.5mv'2=mgh
h=161.5
161.5+150=311.5
最大高度为311.5 m
这是第一问的答案
后面两位会做但数太麻烦了,sorry 啊
不明白老外为啥那么爱算数啊
v2-v'2=2as
v'2=3167.61
0.5mv'2=mgh
h=161.5
161.5+150=311.5
最大高度为311.5 m
这是第一问的答案
后面两位会做但数太麻烦了,sorry 啊
不明白老外为啥那么爱算数啊