Asked by Kevin

A 900kg car strikes a huge spring at a speed of 22m/s, compressing the spring 4.0m
How long is the car in contact with the spring before it bounces off in the opposite direction?

I found the spring constant to be 27225, which i know is right, but am having trouble with this second part. thank you
Answered by Henry
a = (V^2-(Vo^2))/2d =(0-(22^2))/8 = -60.5m/s^2.

a = (V-Vo)/t
t = (V-Vo)/a = (0-22)/-60.5 = 0.364 s.
Answered by Erin
it's .57
Answered by Nathan
Erin I think you are a bit late
Answered by Xerno
Erin come on dude if ur gonna be three years late at least show your work
Answered by Kish
How did you find the spring constant?
Also need help on the second part.
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