Acar travels from point a to point b, moving in the same direction but with a non-constant speed. the first half of the distance, the car travels with a speed v_1v 1 . the remaining part of the way, the car travels half the time with a speed v_2v 2 and half the time with a speed v_3v 3 . what is the average speed over the entire journey

Explanation:

The average speed is given by:

let the total distance be d

time taken in first part of the journey= t₁

time taken in second part of the journey= t₂

time taken in third part of the journey= t₃

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer