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Sagot :
High (in m) a hill can a car coast up is 45.92m, if friction is negligible and its initial speed is 108 km/h
Initial velocity V = 108 Km/hr
V = 30m/s
Let mass of car m
Kinetic energy = 1/2 m[tex]v^{2}[/tex]
potential energy = mgh
by energy conservation,
h = [tex]v^{2}[/tex]/2g = 45.92m
Friction is the force preventing moving in the same direction between moving components of solid surfaces, fluid layers, and sliding materials. There are numerous types of friction:
Dry friction prevents the relative lateral motion of two in touch solid surfaces. Static friction (also known as "stiction") occurs between stationary surfaces and is further subdivided into kinetic friction (also known as "stiction") between moving surfaces. Except for atomic or molecule friction, the interaction of surface features known as asperities is the main cause of dry friction (see Figure 1).
Fluid friction can occur when layers of a viscous fluid move in close proximity to one another. Lubricated friction is the friction between two solid surfaces that is caused by a lubricating fluid.
Learn more about friction here:
https://brainly.com/question/13000653
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