The light turns green, and a bicyclist starts forward with an acceleration of 1.2m/s^2 . How far must she travel to reach a speed of 8.0m/s ?

Question

mathslover · Answer

given a = 1.2 m/s^2 
and also u = 0 m/s and v = 8.0 m/s

mathslover · Answer

$$\large{v^2-u^2=2as}$$

anonymous · Answer

so 26.7?

mathslover · Answer

$$\large{64 = 2(1.2) s}$$
$$\large{64=2.4s}$$
$$\large{\frac{64}{2.4}=s}$$
$$\large{\frac{640}{24}=s}$$
$$\large{26.7 m = s}$$

mathslover · Answer

good work @mandonut

anonymous · Answer

i used the other formula

anonymous · Answer

with at^2

mathslover · Answer

you can use any formula but acc. to me this is easier

anonymous · Answer

okay thanks

lgbasallote · Answer

hmm weird..usually math slover goes on saying how these are physics questions...wonder why the change of heart

mathslover · Answer

for that u must apply v = u + at first and then use the value of t

mathslover · Answer

@lgbasallote that is because it includes the work of math and yes I was tired saying that all .. 

at last users continue that they want to do... so no response here

lgbasallote · Answer

ahh welcome to the dark side

mathslover · Answer

:D but this will not be in dark side..when I will recover myself with sickness