Answer in Mechanics | Relativity for Bell #139934
March 12th, 2023
“time = frac{distance}{speed}”
for the car,
total time taken “=frac{25}{40}+frac{25}{80}=frac{15}{16} hours=0.9375hrs”
for the truck,
let the total time taken = “x” hours
speed “times” time =distance
“(frac{1}{2}x)40+(frac{1}{2}x)80=50”
“20x+40x=50”
“60x=50”
“x=frac{50}{60}=0.8333hrs”
the truck took the shortest time to go there.
