Here we show results of deceleration measurements from drop weight tests with cubic concrete bodies on soil layers with different compaction. In each experiment, the maximum deceleration was compared with an average deceleration resulting from the impact speed and the deceleration time. These deceleration factors show values in the range of 1.3-2.4. Also a penetration factor is determined for each test, which compares the penetration depth with a theoretical distance during the brake time. The combination of the two values reveal a large diversity of impact behavior.