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How fast do you have to be going to hydroplane?

Hydroplaning can occur at speeds as low as 35-45 mph in heavy rain or on wet roads with low tire traction. The risk of hydroplaning increases with higher speeds, worn tires, and improper tire pressure.


Does Crash severity increases with the speed of the vehicle at impact?

Yes, all things being equal, crash severity does increase proportional to the speed of each vehicle at impact, and is a vector sum. So, there is a big difference between crash severity at impact from being "rear-ended" (when one vehicle is traveling the same direction as another, and impacts the front of their vehicle with the rear of another) and a "head-on" impact (two cars traveling into one another, impacting both front bumpers). In the rear-end impact, you take the momentum (mass times velocity) of the rear, impacting vehicle "A" and subtract the momentum of the front-most impacted vehicle "B", and that gives you the resultant impact force (the difference in momentum being transferred). weak impact scenario example: vehicle A is traveling 60 mph, and vehicle B is the same mass and is traveling 50 mph. The difference in momentum would be the mass times 10 mph...not much. severe impact scenario: vehicle A is traveling 70 mph, and vehicle B is at rest (0 mph)...large impact. In the head-on impact, you have the most severe crash scenario. In this case, you ADD the momentum of vehicle A with the momentum of vehicle B, and you get the resultant force of impact. Even if both vehicles are traveling 30 mph, with the same mass, and have a heaad-on collision, the is close to the same as one vehicle traveling 10 mph and hitting the other vehicle going 70 mph...severe impact.


How many mph is 300 hp?

Horsepower (hp) and miles per hour (mph) are not directly convertible since they measure different things: power and speed, respectively. The speed a vehicle can achieve with 300 hp depends on various factors, including the vehicle's weight, aerodynamics, drivetrain efficiency, and gearing. For example, a well-designed sports car with 300 hp might reach speeds of 150 mph or more, while a heavier vehicle may achieve lower speeds. Thus, the mph achievable with 300 hp varies widely based on the specific vehicle and conditions.


How does kinetic affect the stopping distance of a vehicle traveling at 30 mph compared to the same vehicle traveling at 60 mph?

The kinetic energy of the vehicle when it is travelling faster is four times as great. It the brakes apply the same retardation and the friction from the tires on the road surface is unchanged then the stopping time will be four times as long.


How much faster is the B-2 stealth bomber than sound?

The B-2's maximum speed is 628 mph while the speed of sound is 768 mph, so ii is subsonic (the B-2 cannot fly faster than sound).