Question

please give me a answer​

Answer 1

Answer:

4.5m/s

Step-by-step explanation:

I hope it is correct

Answer 2

Step-by-step explanation:

Da = 6km × 1000 = 6000m

Sa = 4m/s

Ta = 6000/4 = 1500sec

Db = 4km × 1000 = 4000

Sb = 2.5m/s

Tb = 4000/2.5 = 1600sec

Avg Speed = Total distance covered / Total time taken

=> 6000 + 4000/1500 + 1600

=> 10000/3100

=> 3.22 m/s