Though its primary purpose is to stop water from going into a swimmer's ears, (and keeps hair fairly dry), it can help a swimmer to move faster. The cap has a tiny bit less friction with the water than hair does, and this can have a measurable effect on speed, especially at the competitive level.
to increase the speed & reduce resistence of the boat
Either to increase speed and reduce torque or to decrease speed and increase torque while conserving mechanical energy.
Generally it will reduce both speed and range.
To increase the speed of rotation of the coil, you can increase the voltage applied to the coil or reduce the resistance in the circuit. Additionally, using a stronger magnetic field or reducing the friction in the system can also help increase the speed of rotation.
Reduce the size of the pulley on the motor
first do you reduce the voltage level or increase the load factor
You can change the chain sprockets of most motorcycles to get a higher top speed. Reduce the rear sprocket numerically, and/or increase the front sprocket numerically. A higher profile tire will also increase top speed slightly.
To increase rocket speed, you can add more propellant to increase thrust, reduce the rocket's mass by shedding unnecessary weight, or improve aerodynamics to minimize drag. Additionally, optimizing the rocket's trajectory and using efficient engine designs can also help increase speed.
That shuttle run is hard to reduce in time unless you increase in speed.
A river's speed may increase due to factors such as the gradient or slope of the land, the volume of water flowing in the river, and the presence of obstacles that reduce friction. Additionally, changes in the river's width or depth can influence its speed as well.
It usually( depending on brand) modifies the amount of fluid to the rack to increase/reduce the assistance based on the speed of the wheel.
Flaps are used on aircraft to increase the wing area of the plane and therefore increase lift and reduce speed.