Question
A car travels West for 20min at 80km/hr and in direction 45NW at 30km/hr for 6min. Calculate the Total distance covered/ displacement of the car/ average speed/ average velocity.
Answers
Damon
west =(1/3)hour*80 + (1/10)hr* 30 * cos 45
north = (1/10)*30 * sin 45
distance = sqrt(north^2+west^2)
displacement = distance at angle T north of west where tan T = north/west
speed = distance/ (1/3+1/10)
velocity = speed at angle T
north = (1/10)*30 * sin 45
distance = sqrt(north^2+west^2)
displacement = distance at angle T north of west where tan T = north/west
speed = distance/ (1/3+1/10)
velocity = speed at angle T