a car travels 100 km due east in 2 hours. it then travels 50 km south in 1 hour what is its average velocity
Answers
Answered by
0
Answer:
Distance vector due east, E= 100 i, Distance vector due south, S=- 50j ,
where i and j are unit vectors along east and south directions .
Resultant distant vector D = E + S = 100 i - 50 j
Total time = 2 +1 = 3 hrs
Average (Resultant) velocity vector V = (100/3)i - (50/3) j
Magnitude of V =Sqrt ( 100^2+50^2) /3 = 37.26 Km /hr
Resultant direction , Angle = arctan ( -50/100) = -26.56 degrees.
Similar questions