ack took 5.5 seconds to fall down the hill. His initial velocity was 0.5 meters per second. His final velocity was 2.5 meters per second. Calculate his average acceleration.

I chose the answer 2.0 m/s/s is that correct?

Question

ack took 5.5 seconds to fall down the hill.  His initial velocity was 0.5 meters per second.  His final velocity was 2.5 meters per second.  Calculate his average acceleration.

I chose the answer 2.0 m/s/s  is that correct?

hoblos · Answer

it is 2m/s/5.5s
=> it is 0.36m/s/s

anonymous · Answer

I did that answer last time, but my teacher said that that's incorrect

anonymous · Answer

I agree with hoblos. Average velocity = $\Large \frac{{\Delta v}}{{\Delta t}}$

anonymous · Answer

Acceleration = Vf - Vi 
                       --------
                              t 
= (2.5-0.5 )/ 5.5
=0.36 m/s/s

I agree as well.

anonymous · Answer

Sorry, *average acceleration