Question

• A. 40/8 m/s
• B. 500/9 m/s
• C. 188/9 m/s
• D. 270/8 m/s

Answer 1

Answer:

B. 500/9 m/s

aerage speed =(total distance )/(total time)

distance =12800-12000=800km

time = 4hrs

speed =800/4=200 kmph

speed in m/s =200*{5/18}=500/9 m/s