百度作业网帮帮我～～是一道数学题!
来源：学生作业帮 编辑：百度作业网作业帮 分类：英语作业 时间：2024/07/14 00:42:32
帮帮我～～是一道数学题!
A super bouncy rubber ball is thrown against a penel. The panel has a mass of 1.25kg and can move freely, forwards and backwards. The balls velocity right before hitting the panel is +6.00m/s, and it bounces off at -4.90m/s. If the panel moves forward at 1.09m/s, what was the mass of the rubber ball?
原谅我用英文!
A super bouncy rubber ball is thrown against a penel. The panel has a mass of 1.25kg and can move freely, forwards and backwards. The balls velocity right before hitting the panel is +6.00m/s, and it bounces off at -4.90m/s. If the panel moves forward at 1.09m/s, what was the mass of the rubber ball?
原谅我用英文!
这是一个动量定理的题目：
设the mass of therubber ball is A.
根据动量定理：
1.25x（6+4.9）=1.09A
A=1.25x（6+4.9）/1.09
=12.5 kg
设the mass of therubber ball is A.
根据动量定理：
1.25x（6+4.9）=1.09A
A=1.25x（6+4.9）/1.09
=12.5 kg