Describe how a crumple zone on a car reduces injury to the driver in a crash.
During a crash the velocity of the car is reduced to zero. The deceleration of the car exerts a force on the driver causing injury. Without a crumple zone the change in velocity is instantaneous therefore a high deceleration and greater force. A crumple zone extends the time over which the car is decelerated leading to a lesser force.
TL
Related Physics GCSE answers
All answers ▸If a box full of feathers and a box full of bricks were to be dropped at the same time and from the same height, which one would hit the ground first?
Resistors of 5 ohms and 10 ohms are connected in series with a battery supplying 3 volts. What is the total resistance ? And calculate the current in the circuit.
Describe the photoelectric effect.
define 1 volt