Question

Выразить скорость в км\ч.1км пути велосипедист проехал за 4мин. с какой скоростью он двигался?1км пути пешеход преодолел за 10мин. с какой скоростью он двигался?30км пути машина преодолела за пол часа. с какой скоростью она двигалась?

Answer 1

Четыре минуты это 1/15 часа. v=l/t, 1:1/15 = 15 км/ч
10 мин это 1/6 часа. Тогда скорость 1:1/6 = 6 км/ч
30мин это 1/2 часа. Тогда скорость 30:1/2 = 60 км/ч

Answer 2

Calculation of Speed

To calculate the speed, we can use the formula:

Speed = Distance / Time

Let's calculate the speeds for each scenario:

1. The cyclist covered 1 km in 4 minutes. To find the speed, we divide the distance (1 km) by the time (4 minutes):

Speed = 1 km / 4 min

2. The pedestrian covered 1 km in 10 minutes. To find the speed, we divide the distance (1 km) by the time (10 minutes):

Speed = 1 km / 10 min

3. The car covered 30 km in half an hour (30 minutes). To find the speed, we divide the distance (30 km) by the time (30 minutes):

Speed = 30 km / 30 min

Let's calculate the speeds using the given values:

1. The cyclist's speed: - Distance: 1 km - Time: 4 minutes

Speed = 1 km / 4 min = 0.25 km/min 2. The pedestrian's speed: - Distance: 1 km - Time: 10 minutes

Speed = 1 km / 10 min = 0.1 km/min 3. The car's speed: - Distance: 30 km - Time: 30 minutes

Speed = 30 km / 30 min = 1 km/min Therefore, the cyclist was moving at a speed of 0.25 km/min, the pedestrian was moving at a speed of 0.1 km/min, and the car was moving at a speed of 1 km/min.

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