To help reduce the severity of accidents, an engineering company designs large plastic barrels filled with antifreeze that can be placed in front of bridge supports. in a simple test, a 1200 kg car moving at 20 m/s (W) crashes into several barrels. the car slows down to 8.0 m/s (W) in 0.40 s. i found the average net force to be -36000 N (W) b: what would happen if the car hit the bridge supprts instead of the barrels. c: why do they use antifreeze instead of water. i'm confused but i think that for both b and c, it's about the car's ability to bounce back?