Question

A runner cover 100 m in 10 s and the remaining 100 m in 8 s. Calculate speed for the first 100 m and the second 100 m and also calculate the average speed for the whole journey .​???​

Answer 1

Answer:

Speed in first 100 m is 10m/s

Speed in second 100m is 12.5m/s

Average speed for whole journey is 11.11 m/s

Step-by-step explanation:

Distance is 100m for both journey and speed is 10m/s and 8m/s respectively.

Speed in first journey

Speed = Distance / Time

Speed = 100/10

Speed = 10 m/s

Speed for first journey is 10 m/s

Speed for second journey

Speed = Distance / Time

Speed = 100 / 8

Speed = 12.5 m/s

So speed for second journey is 12.5 m/s

So now let's find average speed.

Average speed = Total distance / Total time

Avg speed = (100 + 100) / (10 + 8)

Avg speed = 200/18

Avg speed = 11.11 m/s

Answer 2

Answer:

can be friends

Step-by-step explanation:

A runner cover 100 m in 10 s and the remaining 100 m in 8 s. Calculate speed for the first 100 m and the second 100 m and also calculate the average speed for the whole journey .???