Question

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

Answer 1

F=m*a=m*(V/t)=(1500кг*30м/с)/20с=2250Н

Ответ: 2250Н

Answer 2

Calculation of Engine Thrust Force

To determine the thrust force of the engine, we need to consider the given information. The car has a mass of 1.5 tons (1500 kg) and reaches a speed of 20 m/s after 20 seconds of motion. We are asked to neglect any resistance to motion.

The thrust force of the engine can be calculated using Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration.

In this case, the acceleration can be calculated using the formula:

acceleration = (final velocity - initial velocity) / time

Substituting the given values:

acceleration = (20 m/s - 0 m/s) / 20 s = 1 m/s^2

Now, we can calculate the force using the formula:

force = mass * acceleration

Substituting the given mass:

force = 1500 kg * 1 m/s^2 = 1500 N

Therefore, the force of the engine's thrust is 1500 Newtons.