Question

plz answer fast guys it is very important answer should be correct​

Answer 1

2(d) Here , total distance = speed x time

So,

s = (60 x 0.52) + (30 x 0.24) + ( 70 x 0.71)

⇒s = 88.1 km

Now ,total time taken will be 

t = 0.52 + 0.24 + 0.71 = 1.47 hrs

Therefore, average speed = Total distance/Total time

⇒ 59.932 km/h

= $\boxed{60\ km/hr}$

2(e) 20 km/h = 20*(5/18)

                      = $\boxed{5.56\ m/s}$

Mark as the brainliest :)