Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

Force on Driver in Example Car Crash

Example Car Crash 中司机的力

For the car crash scenario where a car stops in 1 foot from a speed of 30 mi/hr, what is the force on the driver? Assume a 160 lb (mass = 5 slugs) driver.

在一辆车以30英里/小时的速度行驶并停在1英尺内的碰撞场景中，驾驶员受到的力是多少？假设驾驶员体重160磅（质量=5slug）

If firmly held in non-stretching seatbelt harness: Stopping distance 1 ft.

  • Deceleration = 967 ft/s2 = 294 m/s2 = 30 g's
    减速度 = 967 英尺/秒² = 294 米/秒² = 30 个重力加速度
  • Force = 4813 lb = 21412 N = 2.4 tons
    力 = 4813 lb = 21412 N = 2.4 吨
 Non-stretching seatbelt
非伸缩安全带
If not wearing seatbelt, stopping distance determined by nature of collision with windshield, steering column, etc. : stopping distance 0.2 ft.
  • Deceleration = 4836 ft/s2 = 1474 m/s2 = 150 g's
    减速度 = 4836 ft/s² = 1474 m/s² = 150 g's
  • Force = 24068 lb = 107059 N = 12 tons!!
    力 = 24068 lb = 107059 N = 12 吨!!
 No seatbelt!
没有安全带！
If seat belt harness stretches, increasing stopping distance by 50%: 1.5 ft.
  • Deceleration = 645ft/s2 = 197 m/s2 = 20 g's
    减速度 = 645英尺/秒² = 197 米/秒² = 20 g's
  • Force = 3209 lb = 14274 N = 1.6 tons
    力 = 3209 lb = 14274 N = 1.6 吨
 Stretching seatbelt
安全带伸展
These calculated numbers assume constant deceleration, and are therefore an estimate of the average force of impact.

如果牢固地系在非伸缩的安全带中：停车距离1英尺。如果不系安全带，停车距离由与挡风玻璃、转向柱等的碰撞性质决定：停车距离0.2英尺。如果安全带伸缩，停车距离会增加50%：1.5英尺。这些计算数值假设恒定的减速度，因此是冲击力平均值的估计。



Calculation of force on driver
驾驶员所受力的计算
 Non-stretching seatbelt
非伸缩安全带
 Stretching seatbelt
安全带伸展
 No seatbelt!
没有安全带！
 Seatbelt and airbag
安全带和安全气囊
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Example of Calculation of Force on Driver

驾驶员所受力的计算示例




If the weight of the driver is N = lb, corresponding to
mass = kg = slugs,
and the car is traveling with a speed:
v = m/s = km/hr = mi/hr,
then a crash which stopped the driver in a distance d=m = ft
would result in an average impact force of

Impact force F = N = lb = tons!!

冲击力 F = N = lb = tons!!
中文译文中的待填/计算数值依次对应：1：f 2：fc 3：ft。实际数值以上方原输入框为准。
You may change any data value. Clicking outside the box will then initiate a calculation of the impact force and conversion of the data value to the other types of units.

Discussion of car crash scenario

汽车碰撞场景讨论

How does a seatbelt change the impact force on the driver?

安全带如何改变对驾驶员的冲击力？
如果司机的重量为 N = 磅，对应质量 = 千克 = 英镑，且汽车以速度 v = 米/秒 = 公里/小时 = 英里/小时行驶，那么在距离 d= 米 = 英尺内使司机停止的碰撞将导致平均冲击力为。您可以更改任何数据值。点击框外将启动冲击力的计算并将数据值转换为其他单位类型。
中文译文中的待填/计算数值依次对应：1：w 2：wc 3：m 4：mc 5：v 6：vk 7：vc 8：d 9：dc。实际数值以上方原输入框为准。
 Index

Work-energy principle

Car crash scenario
索引 功-能原理 汽车碰撞场景
 
HyperPhysics***** Mechanics
力学
R Nave
 Go Back
返回