Question

ПОМОГИТЕ ! :/ Мотоцикл за первые 3 часа проехал 90 км, а следующие 2 часа двигался со скоростью 90 км/ч. Определи среднюю скорость мотоцикла на всём пути. Ответ округли до целого числа. Ответ: средняя скорость мотоцикла на всём пути равна км/ч.

Answer 1

Ответ:

54 км/ч

Объяснение:

t(1)=3 ч

t(2)=2 ч

S(1)=90 км

V(2)=90 км/ч

V-средняя скорость

S-все расстояние

t-затраченное время

V=S/t

t=t(1)+t(2)=3+2=5 часов

S(2)=V(2)/t(2)=90*2=180 км

V=(S(1)+S(2))/t=(90+180)/5=270/5=54 км/ч

Answer 2

Calculating the Average Speed of the Motorcycle

To calculate the average speed of the motorcycle for the entire journey, we need to find the total distance traveled and the total time taken.

Given information: - The motorcycle traveled 90 km in the first 3 hours. - The motorcycle traveled at a constant speed of 90 km/h for the next 2 hours.

To find the total distance traveled, we add the distance traveled in the first 3 hours to the distance traveled in the next 2 hours: - Distance traveled in the first 3 hours: 90 km - Distance traveled in the next 2 hours: 90 km/h * 2 h = 180 km - Total distance traveled: 90 km + 180 km = 270 km

To find the total time taken, we add the time taken in the first 3 hours to the time taken in the next 2 hours: - Time taken in the first 3 hours: 3 hours - Time taken in the next 2 hours: 2 hours - Total time taken: 3 hours + 2 hours = 5 hours

Now, we can calculate the average speed of the motorcycle by dividing the total distance traveled by the total time taken: - Average speed = Total distance / Total time = 270 km / 5 hours = 54 km/h

Therefore, the average speed of the motorcycle for the entire journey is 54 km/h.

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