20 seconds after the start of movement, the electric locomotive developed a speed of 4 m / s. Find the force imparting

20 seconds after the start of movement, the electric locomotive developed a speed of 4 m / s. Find the force imparting acceleration if the mass of the electric locomotive is 184 tons.

The acceleration of an electric locomotive is calculated by the formula:
a = (V – V0) / t, V is the final speed of the electric locomotive (V = 4 m / s), V0 is the initial speed of the electric locomotive (V0 = 0 m / s), t is the time of movement of the electric locomotive (t = 20 s) …
Let’s calculate the acceleration of an electric locomotive:
a = (V – V0) / t = (4 – 0) / 20 = 0.2 m / s².
According to Newton’s second law:
F = m * a, where m is the mass of the electric locomotive (m = 184 t = 184,000 kg).
F = m * a = 184000 * 0.2 = 36800 N = 36.8 kN.
Answer: The force imparting acceleration is 36.8 kN.