According to Newtons second law the impact force during a collision is equal to the mass multiplied by the deceleration of the objectF = m aThe impact force can be related to weight mg.If acceleration is -3g then impact force is 3mgSaying the force is 3g is a convenient but technically incorrect way of expressing the force on a car or individual. A person can withstand a deceleration of 20g for a few milliseconds.
Impact Force
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Specification: AQA Physics (7407), AS-level, 3.4.1.5 Newton's laws of motion. Topic: Newtons Laws of Motion.
More in Newtons Laws of Motion
- Terminal Speed
- Motion of a Powered Vehicle
- Stopping Distance
- Thinking Distance
- Braking Distance
- Practical: Measuring Friction
- Contact Time and Impact Time
- Car Safety
All 16 lessons in Newtons Laws of Motion · All AQA AS-level Physics topics