Crash Barrier Impact Force Analysis

I need a clear, professionally documented set of impact-force calculations for a steel crash barrier measuring 8.5 m × 8.5 m. The scenario involves a truck striking the barrier head-on at 70 km/h, and I am interested specifically in the peak force the structure must resist... (Budget: $10 - $30 USD, Jobs: Excel, Finite Element Analysis, Structural Engineering, Technical Documentation)