A Tesla Roadster car accelerates from rest at a rate of 7.1m/s for a time of 3.9s
1 answer:
The distance covered is 54.0 m
Explanation:
Since the motion of the car is a uniformly accelerated motion, we can use the following suvat equation:
where
u is the initial velocity
t is the time
a is the acceleration
s is the distance covered
For the car in this problem, we have
u = 0 (it starts from rest)
is the acceleration
t = 3.9 s is the time
Substituting, we find s:
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To find a solution to this problem it is necessary to apply the concepts related to the Reynolds number and its definitions on the type of fluid.
A Reynolds number less than 2000 considers the laminar fluid, while a Reynolds number greater than 4000 is considered a turbulent fluid. (The intermediate between the two values would be a transient fluid)
The mathematical equation that defines the Reynolds number is given by
Where
Density
V= Velocity
D= Diameter
Viscosity
Our values are given as
The velocity can be find through the Discharge equation,
Q = VA
Where
V = Velocity
A = Area
Replacing,
Replacing at the Reynolds equation,
Since Reynolds' number is greater than 4000, then we consider this a turbulent fluid.