Final answer:
To safely navigate a sudden high place in the road, you should slow down and proceed with caution. Speeding up or ignoring the obstacle can result in loss of vehicle control, while applying brakes suddenly is risky and should be avoided.
Step-by-step explanation:
When you encounter a sudden high place in the road ahead, the safest reaction is to slow down and proceed with caution. Speeding up could cause you to lose control of your vehicle, while ignoring it and maintaining your speed could result in an uncomfortable jolt or even damage to your vehicle. Sudden braking is also not advisable as it can lead to loss of control or an accident if done abruptly.
Regarding the physics of the situation, if a car goes over the top at faster than the safe speed, it risks becoming airborne or losing traction. On the other hand, if the car goes over the top at slower than the safe speed, it allows the driver to maintain control and safely navigate the obstacle.