Answer to Question #4566 in Mechanics | Relativity for Theresa

Question

If a car ca accelerate at 4.3m/s[sup]2[/sup], how far will it have to travel from rest to reach a speed of 28 m/s?

Answer 1

a=4.3 m/s²
V=28 m/s
S-?

S=S₀+V₀t+at²/2
V=V₀+at
S₀=0, V₀=0 => S=at²/2
V=at => t=V/a
S=a/2*V²/a²=V²/2a
S=28²/2/4.3=91,16m