I have summarised the question, with all the key Points. However if this is not clear let me know please.
Question:
Whilst driving at 70kmh-1, the car goes over undulating stretch of road. Driver notices the car bounced up dramatically. Calculate how far apart the undulations in the road are. If effect was due to resonance of the car suspension.
thats pretty much the whole question.
Additional information: Spring constant is 25000Nm-1
would i have to use f=kx and solve for x?