12. Cuál es la velocidad inicial de un tren si después de haber recorrido20 metros a una aceleración de 4 m/s2 alcanzó una velocidad de 164 m/s

163.5m/s

Step-by-step explanation:

Given the following

distance travelled = 20metres

acceleration = 4m/s^2

final velocity = 164m/s

Required

Initial velocity u

Using the equation of motion

v^2 = u^2 + 2aS

Substitute

164^2 = u^2 + 2(4)(20)

26,896 = u^2 + 160

u^2 = 26,896 - 160

u^2 = 27,736

u = √27,736

u = 163.5m/s

Hence the initial velocity is 163.5m/s

the answer is 45 i just did it on oddesy ware

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: