Acar slows down uniformly from a speed of 21.0 m/s to rest in 6.00s. how far did it travel in that time?

The kinematic equation to find distance is:



where,
v = velocity
a = acceleration
t = time

Since we need to find 'a' (which is negative due to the car slowing down), use the equation a = Δv / t = -21 / 6 = -3.5m/s^2
so the equation looks like this:



d = (21 x 6) + (0.5 x -3.5) 6^2 = 189meters

Cpowerlifting my boi