Question

An automobile starts at rest and speeds up at 3.5 m/s2 after
the traffic light turns green. How far will it have gone when it is traveling
at 25 m/s?

Answer 1

Answer:

distance travell = 89.42m

explanation

initial velocity (u) = 0m/s

final velocity (v) = 25m/s

acceleration (a) = 3.5m/s^2

distance (s) =?

by using formula v^2 - u^2 = 2*a*s

=> (25*25) - 0 = 2*3.5*s

=> 625 = 7s

=> s = 625/7

=> s = 89.42m

thanks..........

Answer 2

Answer:

89

Explanation:

The answer is actually just 89 because the minimum number of significant figures is 2 (with the 3.5).