Question

Plzz answer question( b) it is urgent​

Answer 1

Answer:

Speed = 16 km per hour

Speed = $4\frac{4}{9}$ meter per second

Step-by-step explanation:

b). Total distance covered to and fro = 12 + 12

                                                        = 24 km  

    Total time taken to cover this distance = 1.5 hours

    Since, speed = $\frac{\text{Distance traveled}}{\text{Time taken}}$

                           = $\frac{24}{1.5}$

                           = 16 km per hour

     Since, 1 km = 1000 m

     And 1 hour = 3600 seconds

     16 $\frac{\text{km}}{\text{hour}}$ = 16 × $\frac{1000}{3600}$ meter per second

                 = $\frac{160}{36}$

                 = $\frac{40}{9}$

                 = $4\frac{4}{9}$ meter per second