Carlo drives his car for a picnic by first going 105 km north to pick up his girlfriend and then 120.0 km east to reach the picnic groove. The whole trip takes 135 min. Calculate (a) Carlo’s average speed and (b) average velocity.

Answer 1

135 min = 2.3 hr
speed = (1/2.3) sqrt (105^2+120^2) km/hr

velocity = speed at angle tan^-1(120/105) east of north