Question

Авто ехал 20 км со скоростью 20 км/ч, а потом со скоростью 5 км/ч. Найти S через 3 часа. 4-й класс

Answer 1

20+(5*3)=35км
ответ: s=35 км

Answer 2

Calculating Distance Traveled

To find the total distance traveled (S) after 3 hours, we can use the formula \( S = Vt \), where S is the distance, V is the velocity, and t is the time.

First, let's calculate the distance traveled at 20 km/h for 1 hour: \( S_1 = V_1 \times t_1 = 20 \, \text{km/h} \times 1 \, \text{h} = 20 \, \text{km} \).

Next, we'll calculate the distance traveled at 5 km/h for 2 hours: \( S_2 = V_2 \times t_2 = 5 \, \text{km/h} \times 2 \, \text{h} = 10 \, \text{km} \).

Finally, we'll add the distances together to find the total distance traveled: \( S = S_1 + S_2 = 20 \, \text{km} + 10 \, \text{km} = 30 \, \text{km} \).

So, the total distance traveled after 3 hours is 30 km.