The driver of 1800 kg truck is moving with a speed of 9 m/s on a steep down hill slope towards the lake. The driver discovers the truck's brakes have failed and no longer work. The driver makes a decision to stop the truck by running it into the ditch alongside the road rather than going straight into the lake. As he runs the truck into the ditch, it take 0.35 seconds before coming to a stop. What force must was exerted on the truck as it came to a stop?
- oubaasLv 72 months ago
force F = -m/2*V^2 / (V/2*t) = 0.900*9^2/ (4.5*0.35) = 46.3 kN