Question

In a crash test car is driven into solid wall at a speed of 35 mph. Figure below shows the car’s acceleration as it crashes into the wall. What is the maximum force experienced by the 1650kg car?

Answer 1

Net force on the car is given by

$F = ma$

here if acceleration is maximum then force must be maximum

so from graph the maximum value of acceleration is a = 300 m/s^2

$F = 1650 * 300$

$F = 495000 N$

so the maximum force is 495000 N