What is the sleek shape of a bobsled reduces and allows greater speeds
It allows a greater range of speeds, increase performance and fuel economy.
A bobsled can reach speeds between 80-90 miles per hour (130-145 km/h) on a standard track, while the top speeds can exceed 90 miles per hour (145 km/h) on larger tracks.
Turbojets increase efficiency at high speeds because they rely on the forward motion of the aircraft to compress incoming air, which reduces the amount of work the engine has to do compared to slower speeds. This allows turbojets to produce more thrust for the same amount of fuel, resulting in improved efficiency at higher speeds.
It is called the venturi effect. The air pressure between the car and the truck reduces due to the relative speeds
Their cores are spinning faster.
Known as Maglev (derived from magnetic levitation), it is a method of using magnets to raise a train above the ground, and in propulsion. This reduces friction by a great extent and allows for very high speeds.
Known as Maglev (derived from magnetic levitation), it is a method of using magnets to raise a train above the ground, and in propulsion. This reduces friction by a great extent and allows for very high speeds.
broadband
Concorde
jorge e. klenton
The enzyme reduces the activation energy of the reaction, therefore chemical reaction speeds are increased.
It isn't always - for instance: static friction (standing still) is greater than moving friction. BUT, Air resistance (or water resistance for boats) increases with speed - quite rapidly. The reason for the increase is that you must move the fluid out of the way in less time as you speed up.