UC知道以下是物理问题,那位好心人能帮忙解解,最好能用英文结,汉语也没关系,紧急呀.
来源：百度知道 编辑：UC知道 时间：2024/06/04 21:58:31
At 15m/s the braking distance is 19m . the mass of the car is 1000kg.
1.calculate the kinetic energy of the car at this speed .
2.show that the braking force needed to stop the car in 19m is about 5900m.
3.when the speed is doubled , the overall stopping distance is more than doubled ,explain why
4.explain why the braking distance changes when the car is fully loaded.
1.calculate the kinetic energy of the car at this speed .
2.show that the braking force needed to stop the car in 19m is about 5900m.
3.when the speed is doubled , the overall stopping distance is more than doubled ,explain why
4.explain why the braking distance changes when the car is fully loaded.
我觉得你第二个问题抄错 应该是5900N 牛顿吧
帮你翻译一下
At 15m/s the braking distance is 19m . the mass of the car is 1000kg. 以15米每秒的紧急制动距离为19米。汽车的质量为1000千克。
1.calculate the kinetic energy of the car at this speed .
1.求汽车在此速度下的动能
2.show that the braking force needed to stop the car in 19m is about 5900m.
2.证明在19米内置东汽车需要制动力约为5900牛顿
3.when the speed is doubled , the overall stopping distance is more than doubled ,explain why
当速度是两倍时候，总共的刹车路程要多于原先的两倍，请解释原因。
4.explain why the braking distance changes when the car is fully loaded.
请解释为什么汽车满载的时候，制动距离会发生变化