Pregunta
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QuESTION 4 A runner starts running at \( 14: 08 \) and runs for 2 hours. During the 2 hours of running, a distance of 13 , hitometres are covered 4.1 .1 Calculate the average speed of the runner during his run. Use the formula: Speed \( =\frac{\text { Distancenkm }}{\text { Time lithours }} \) 4.12 At what time did the runner finish his rum?

Ask by Gardner Murphy. in South Africa
Feb 25,2025

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The runner's average speed was 6.5 km/h, and he finished running at 16:08.

Solución

Let's solve the problem step by step. ### Step 1: Extract Known Conditions - Start time: \( 14:08 \) - Duration of running: \( 2 \) hours - Distance covered: \( 13 \) kilometers ### Step 2: Calculate Average Speed We will use the formula for speed: \[ \text{Speed} = \frac{\text{Distance (km)}}{\text{Time (hours)}} \] Substituting the known values: - Distance = \( 13 \) km - Time = \( 2 \) hours Now, we can calculate the average speed: \[ \text{Speed} = \frac{13}{2} \] Let's perform the calculation. ### Step 3: Perform Calculation for Speed Now, I will calculate the average speed. \[ \text{Speed} = \frac{13}{2} = 6.5 \text{ km/h} \] ### Step 4: Calculate Finish Time To find the finish time, we add the duration of running to the start time. - Start time: \( 14:08 \) - Duration: \( 2 \) hours Adding \( 2 \) hours to \( 14:08 \): \[ 14:08 + 2:00 = 16:08 \] ### Final Answers 4.1 The average speed of the runner during his run is \( 6.5 \) km/h. 4.12 The runner finished his run at \( 16:08 \).

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Bonus Knowledge

To calculate the average speed of the runner, we can use the formula for speed: Speed \( = \frac{\text{Distance in km}}{\text{Time in hours}} \). The runner covered 13 kilometers in 2 hours. Using the formula, we have: \[ \text{Speed} = \frac{13 \text{ km}}{2 \text{ hours}} = 6.5 \text{ km/h} \] So, the average speed of the runner is 6.5 km/h. For the finishing time, the runner starts at 14:08 and runs for 2 hours. Adding 2 hours to 14:08 results in: \[ 14:08 + 2:00 = 16:08 \] Thus, the runner finished his run at 16:08.

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