Question

Поезд тронулся с места с ускорением 2мс . За какое время он наберёт скорость 36 км/ч

Answer 1

V=v0+at
t=v-v0/a
t=36/2=18

Answer 2

Calculation of Time to Reach a Speed of 36 km/h

To calculate the time it takes for a train to reach a speed of 36 km/h with an acceleration of 2 m/s², we can use the formula:

v = u + at

Where: - v is the final velocity (36 km/h or 10 m/s) - u is the initial velocity (0 m/s) - a is the acceleration (2 m/s²) - t is the time

Rearranging the formula to solve for time (t), we have:

t = (v - u) / a

Substituting the given values, we get:

t = (10 m/s - 0 m/s) / 2 m/s²

Simplifying the equation, we find:

t = 5 seconds

Therefore, it will take the train 5 seconds to reach a speed of 36 km/h.