savannahvargas512
27.03.2020 •
Physics
A baseball player rounds third base and is heading for home when he is signaled by the basecoach to slide. The player has a speed of 3.5 m/s when he begins to slide and he travels through alinear distance of 1.50 meters before coming to rest. Determine the coefficient of kinetic frictionbetween him and the ground. Show all of your work.
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Ответ:
0.4166
Explanation:
Data,
U = 0m/s
V = 3.5m/s
S = 1.50m
Fs ≤ μs N
Fs = force due to friction
μs = coefficient of friction
N = normal force
μs = Fs/N
But Fs = Mass * acceleration = Ma
N = Mass * acceleration due to gravity = Mg
a =?
From equation of motion
V² = U² + 2as
3.5² = 0² + 2 * a * 1.5
12.25 = 3a
a = 4.083 m/s²
μs = ma / mg = a/g
μs = 4.083 / 9.8
μs = 0.4166
Ответ:
the answer is ovey C.) -3.2 kg m/s