A crash barrier lab/experiment was done recently. A cart was dropped from 20cm above and 120cm away from a barrier made out of paper.
Shubhanan Kulkarni
1

Before hitting the paper, the car went of the 120cm ramp and traveled another 50cm so in total 170cm. After the car hit the barrier the force exerted on the barrier was calculated. There were 45 trials done. Below is the data. After calculating the data. What could have 2 sources of error been that may have affected the data. (NO human error, only experimental error)