Question

jim travels first 3 hours of his journey at 60 m/s and the remaining 5 hours at 24 m/s.What is the average speed of jim's travel in m/s? ​

Answer 1

Answer:

Average Speed = 42 m/s

Step-by-step explanation:

Given, For first 3 hours, Speed = 60 m/s (A)

          For remaining 5 hours, Speed = 24 m/s (B)

Therefore, average speed = A + B / 2

                                            = 60 + 24 / 2

                                            = 84/2

                                            = 42 m/s

Answer 2

Answer:

avg speed = total dis / total time

distance = speed * time

dis 1 = 60*3* 3600 = 648000m

dis 2 = 24*5*3600= 432000m

total dis = 1080000m or 1080 km

total time = 8 hours

avg speed = 135 km/hour