CSEC Physics · May/June 2015 · Paper 2 · Question 4(b)(iii)

In a crash test, a car travelling at a constant velocity of 26 m s⁻¹ crashes into a wall and is brought to rest.

With the removal of all protective features, the dummy was subjected to another crash test with the same initial speed. This time it was subjected to a 'lethal' decelerating force of 45 000 N. Calculate the duration of this collision.