Question
8) A runner ran a 600 m race in 2 min 17 seconds Calculate his average speed in m/sec S=Ddiv T underline ( )m/sec
Answer
4.1
(216 Votes)
Harrison
Master · Tutor for 5 years
Answer
Upon performing the division, we arrive a numerical approximation for runner's speed: approximately
. Rounded off to two decimal points. So the average speed is roughly
.
Explanation
## Step1:Firstly, we will convert the total time in which the runner completed the race from minutes and seconds into total seconds. As one minute contains 60 seconds, 2 minute 17 seconds can be converted into seconds through the formula:
seconds## Step2:Coming off of that, we can now use the given formula for average speed ( S = D ÷ T) where:S = average speed,D – distance covered by runner,T – time taken to achieve this.Substituting the obtained time (137 seconds) and the given distance (600 meters), the formula becomes: