Please help me out
Lanie presses the gas pedal in her car down so she can pass another car. She was going 60 mph but ends up going 80 mph in order to pass another car. It takes her car 5 seconds to make this increase in speed. What is Lanie’s acceleration during this time?

12 mph/second
28 mph/second
16 mph/second
4 mph/second

Question

Please help me out
 Lanie presses the gas pedal in her car down so she can pass another car. She was going 60 mph but ends up going 80 mph in order to pass another car. It takes her car 5 seconds to make this increase in speed. What is Lanie’s acceleration during this time? 
  
 12 mph/second 
 28 mph/second 
 16 mph/second 
 4 mph/second

baru · Answer

do you know the formula for acceleration?

noahbred · Answer

umm I think I do but I don't really get how to sole for the 5 seconds

baru · Answer

can u type the formula for acceleration?

noahbred · Answer

velocity = distance/time or v =d/t i think

baru · Answer

thats velocity
i'm asking for acceleration

baru · Answer

note* speed and velocity in this question mean the same thing

baru · Answer

$$acceleration=\frac{ change~ In ~ velocity }{time ~elapsed }$$

noahbred · Answer

acceleration = time or a = v ?

baru · Answer

^ look at the formula i wote

noahbred · Answer

is the answer C

directrix · Answer

http://openstudy.com/study#/updates/56501363e4b045175944eb6f