Answer:
The formula for calculating speed is expressed as;
Speed v = distance d/time t
v = d/t
Given
Distance = 400km
time = 8hours
Substituting into the formula
v = 400/8
Cross multiply
8v = 400
v = 50m/s
Substitute v= 50 back into the formula
v = d/t
50 = d/t
Cross multiply
50t = d
Rearrange
d = 50t
Step-by-step explanation:
I hope this helps!
