Question

at high speed friction is

Answer 1

The friction of metal surfaces and of metals sliding on diamond at very high speeds has been studied. A ball spinning in vacuo at surface speeds up to 800 m/s (ca. 1800 miles/h) is trapped between symmetrically arranged flat plates so that the friction causes it to slow down. The deceleration is measured electronically and recorded.

If you find it useful please mark me as brainlist

Answer 2

Answer:

Explanation:

Friction:

When two surfaces glide past one another, a force known as friction is created.

Moving things lose energy and slow down due to the friction force that opposes their motion.

A fluid, like air or water, exerts a frictional force on moving objects when they travel through it. A fluid's frictional force is referred to as a drag force.

Examples of friction include air pressing against an airplane's nose, sandpaper rubbing against wood, and tyres skidding to a halt on a road.

The following variables impact the frictional force:

• Surface roughness and the amount of force pressing them together have the biggest an impact on these forces.
• The amount of frictional force is influenced by the object's position and angle.
• When an object is put flat against another object, the frictional force is equal to the object's weight.
• The frictional force will increase and surpass the weight of the thing if an object is pushed up against the surface.

• At high speed friction is decreased.

#SPJ2