I have the following problem...(adsbygoogle = window.adsbygoogle || []).push({});

A truck of mass 1000 kg moving at a speed of 13 m/s hits a second truck of 1600 kg at rest at a stop sign. The bumpers of the trucks act like springs, each with a spring constant of 3*10^4 N/m. Neglecting friction, find the following:

(1)The speed of the two trucks when the bumpers compress the most ( the trucks have the same speed at the point ).

(2)Energy stored in the bumpers at the point.

(3)Maximum bumper compression.

(4)The speed and direction of each car after they bumpers push them apart again.

I'm not really sure where to start this problem. But here is what I was thinking of doing...

(1) Use the conservation of linear momentum...

m1 * v1<initial> + m2 * v2<initial> = m1 * v1<final> + m2 * v2<final>

(2) Use the equation for kinetic eergy

Energy = .5 * m1 * v1<final ^ 2

(3) Set the elastic potential energy equation to the opposite of kinetic energy equation

.5 * m1 * v1<final ^ 2 = -0.5 * k<spring constant> * x^2

and solve for x

(4) Split it up into x and y components and take ithe inverse tangent of

ycomponent / xcomponent

Will this properly answer the question? Thanks in advance

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# Homework Help: Question about momentum and collision

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