Asked by Eli
A student with a mass of 66kg is rollerblading at a velocity of 7.8m/s[W] when the trail suddenly becomes very rough and as a result the student stops pushing and comes to a stop in 0.95s.
Determine the net force and acceleration of the student on the rough trail.
Calculate the coefficient of kinetic friction between the rollerblades and the rough trail.
Determine the net force and acceleration of the student on the rough trail.
Calculate the coefficient of kinetic friction between the rollerblades and the rough trail.
Answers
Answered by
Damon
momentum = 66*7.8
average force = change in momentum/time
= -66*7.8/.95 Newtons
acceleration = average force/ 66
friction force = average force
= mu m g
so
mu = |acceleration|/g
average force = change in momentum/time
= -66*7.8/.95 Newtons
acceleration = average force/ 66
friction force = average force
= mu m g
so
mu = |acceleration|/g
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