A ruined in a race decides to accelerate right up to the moment he crosses the line He is the initially travelling at 5m/s and accelerates at 0.4m/s² for 5 sec. find a) the distance he covers
b) his final velocity

S = V t + 1/2 a t^2 = 5 m/s * 5 s + .2 m/s^2 * 25 s^2 =

25 m + 5 m = 30 m     distance traveled

Vf = V + a t = 5 m/s + .4 m/s^2 * 5 s = (5 + 2) m/s = 7 m/s    final velocity

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures