Question

- A boat travels 50 km east, then 120 km north and finally
it comes back to the starting point through the sbortest
distance. The total time of journey is 3 h. What is the
average velocity in km h over the entire trip?
(1) 33.33
(2) 17
(3) 86.7
(4) Zero​

Answer 1

displacement = √2500 + 14400 = √16900 = 130m

Av. velocity = 130/3 = 43.33 km /hr.