Question

Двигаясь из состояния покоя по горизонтальному пути, автомобиль массой 1, 5 т через 20 с после начала движения достигает скорости 30 м/с. Пренебрегая сопротивлением движению, определите силу тяги двигателя.

Answer 1

найди ускорение и умножь на массу. Ускорение равно скорость деленная на время, т. е. 1,5, .т. е сила равна 15000Н*1,5 =22500Н

Answer 2

Calculation of Engine Thrust Force

To determine the thrust force of the engine, we can use the equation:

F = m * a

Where: - F is the force (thrust force in this case) - m is the mass of the car - a is the acceleration

Given: - Mass of the car (m) = 1.5 tons = 1500 kg - Time taken to reach the speed (t) = 20 s - Final velocity (v) = 30 m/s

To calculate the acceleration (a), we can use the equation:

a = (v - u) / t

Where: - u is the initial velocity (which is 0 in this case)

Substituting the given values:

a = (30 m/s - 0 m/s) / 20 s = 1.5 m/s^2

Now, we can calculate the thrust force (F):

F = m * a = 1500 kg * 1.5 m/s^2 = 2250 N

Therefore, the force of the engine (thrust force) is 2250 Newtons.