That all depends on the vehicle and the motor. Some boats use the same kind of motor as cars and trucks, and the only difference is the intake and exhaust. However, some use a motor that turns the...
Rarely. A normal Viking burial involved the corpse being placed in a large grave with faithful animals( horses, dogs etc), slaves, weapons, jewellry and occasionally their wife.
1. Put it in reverse at low speeds 2. Attach hydraulic trim tabs with plenty of travel for high speed braking 3. Invent something else that will conveniently induce drag