Answer on Mechanics | Relativity Question for Anonymous
As V0 = 0, then the equation of the speed is the following:
and the equation of the covered distance:
S = at^2 / 2
where a -
V = 120 km/h = 100 / 3 m/s.
After multiplying the first
equation by t and division by the second equation we get:
V^2 / S =
a = V^2 / (2S) = 10000 / (9 * 2 * 240) = 2.31 m / s^2.
the first equation:
t = V / a = 100 / (3 * 2.31) = 14.4 s.
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