Question

легковой автомобиль движется со скоростью 70 км/ч ,а грузовой со скоротью 40 км/ч.Сейчас легковой автомобильнаходится сзади грузовика на расстоянии 60 км.Оба автообиля движутся в одном направлении.Какое растояние будет между ними через 1 ч,2 ч,3 ч?

Answer 1

70km\h-40km\h=30km\h - скорость сближения автомобиля с грузовиком

а) 60km-30km\h*1h=30km

b) 60km-30km\h*2h=0km

c) 60km-30km\h*3h=|-30km|=30km

Answer 2

Через час - 70*1-40*1-60= -30 км - грузовой впереди, легковой сзади

Через 2 часа - 70*2-40*2-60 = 0 км - они вместе

Через 3 часа - 70*3-40*3-60 = 30 км - легковой впереди, грузовой сзади

Answer 3

Calculation of Distance between Cars

To calculate the distance between the cars after a certain amount of time, we can use the formula:

Distance = Relative Speed × Time

where the relative speed is the difference in speeds between the two cars.

Given: - Speed of the car = 70 km/h - Speed of the truck = 40 km/h - Initial distance between the cars = 60 km

Let's calculate the distance between the cars after 1 hour, 2 hours, and 3 hours.

After 1 Hour:

The relative speed between the cars is 70 km/h - 40 km/h = 30 km/h.

Using the formula, the distance between the cars after 1 hour will be: Distance = 30 km/h × 1 hour = 30 km.

After 2 Hours:

The relative speed between the cars remains the same at 30 km/h.

Using the formula, the distance between the cars after 2 hours will be: Distance = 30 km/h × 2 hours = 60 km.

After 3 Hours:

The relative speed between the cars remains the same at 30 km/h.

Using the formula, the distance between the cars after 3 hours will be: Distance = 30 km/h × 3 hours = 90 km.

Therefore, the distances between the cars after 1 hour, 2 hours, and 3 hours will be 30 km, 60 km, and 90 km, respectively.

Please let me know if there is anything else I can help you with!