Question
an object moves from point p to q with an average speed of 60m/s and comes back from point q to p with an average speed of 144km/h . what is the average speed of whole journey in m/s?
Answers
Henry
144km/h = 144,000m/3600s = 40 m/s.
V = (60+40)/2 = 50 m/s.
V = (60+40)/2 = 50 m/s.
Anonymous
average speed is 48 m/s
sanch
144km/h = 144,000m/3600s = 40 m/s.
V = (60+40)/2 = 50 m/s
V = (60+40)/2 = 50 m/s