Question

I WILL AWARD BRAINLIEST!! PLEASE HELP!!!

Answer 1

A.

$speed = \frac{distance}{time}$

from the question,

the total speed for the pedestrian is

40km and the total time is 10hr

substitute them in the formula, we get

$speed = \frac{40}{10}$

speed = 4km/hr

B. 10hrs - 6hrs = 4hours

C. BC is deacceleration = -dv/dt

CD is constant acceleration = dt = 0