D = 8cm H=8cm - Gauthmath

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Question

Uma pessoa, correndo, percorre 4,0 * * km com velocidade escalar média de 12 km/h. O tempo do percurso é de: 33 min 8 min 30 min 20 min 3 minSHOW LESS2

Solution

Answer: The time for the journey is 20 minutes.

Step 1: Convert the distance from kilometers to meters: 4.0 km = 4.0 * 1000 = 4000 meters.

Step 2: Convert the speed from km/h to m/s: 12 km/h = 12 * 1000 / 3600 = 3.33 m/s.

Step 3: Use the formula for average speed: average speed = total distance / total time. Average speed = 4000 meters / total time.

Step 4: Rearrange the formula to find the total time: Total time = total distance / average speed = 4000 meters / 3.33 m/s = 1200 seconds.

Step 5: Convert the total time from seconds to minutes: 1200 seconds = 1200 / 60 = 20 minutes.

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