The coefficient of friction between the road and the car's tire is determined as 0.78.
Acceleration of the car
The acceleration of the car is calculated as follows;
v² = u² - 2as
0 = u² - 2as
a = u²/2s
where;
- u is the initial velocity = 97 km/h = 26.94 m/s
a = (26.94)²/(2 x 47)
a = 7.72 m/s²
Coefficient of friction
μ = a/g
μ = (7.72)/9.8
μ = 0.78
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