Question

Автомобиль массой 1,2 т движется с ускорением 1,5 м/с2. Сила сопротивления равна 500 Н. Какой путь преодолел автомобиль, если его двигатели выполнили работу 230 кДж? Ответ дайте в СИ.

Answer 1

Ответ:

A=F*S

ma=F-Fсопр

F=ma+Fcопр

S=A/F=(230*1000)/(1200*1.5+500)=100м

Объяснение:

Answer 2

Calculation of the Distance Traveled by the Car

To calculate the distance traveled by the car, we can use the following formula:

Work done by the engines = Force x Distance

Given information: - Mass of the car = 1.2 t (tonnes) = 1200 kg - Acceleration = 1.5 m/s^2 - Resistance force = 500 N - Work done by the engines = 230 kJ (kilojoules)

First, let's calculate the net force acting on the car:

Net force = Force applied by the engines - Resistance force

The force applied by the engines can be calculated using Newton's second law:

Force = Mass x Acceleration

Substituting the given values:

Force = 1200 kg x 1.5 m/s^2

Now, let's calculate the net force:

Net force = (1200 kg x 1.5 m/s^2) - 500 N

Next, we can calculate the distance traveled by the car using the formula mentioned earlier:

Distance = Work done by the engines / Net force

Substituting the given values:

Distance = 230 kJ / Net force

To convert the work done by the engines from kilojoules to joules, we multiply by 1000:

Distance = (230 kJ x 1000) / Net force

Now, let's calculate the net force and the distance traveled by the car.