The stoplight had just changed and a 1,043 kg Cadillac had entered the intersection, headingnorth at 10 m/s, when it was struck by a 930 kg eastbound BMW. The cars stuck together andslid to a halt leaving skid marked angled 86 degrees north of east. How fast was the BMW goingjust before the impact?

From conservation of momentum, along y-axis, m1v1=m1+m2vfsinθ .......(i) along x-axis, m2v2=m1+m2vfcosθ .......(ii) From equation (i) and (ii), the required expression for the required speed is, v2=m1v1m2tanθSubstitute the values, v2=104310930tan86 =0.784 m/s

Answered: The stoplight had just changed and a…

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