Work, Energy and Power

To simulate car accidents, auto
manufacturers study the collisions of moving
cars with mounted springs of different spring
constants. Consider a typical simulation with
a car of mass 1000 kg moving with a speed
18.0 km/h on a smooth road and colliding
with a horizontally mounted spring of spring
constant 5.25 × 10
3
N m–1
. What is the
maximum compression of the spring ?