It takes a truck 3.56 seconds to slow down from 112km/h to 87.4km/h what is it's average acceleration?

a = (v2 -v1) / t   v2-v1 =  (87.4 - 112) = -24.6 km/h  = -24.6/3.6 m/s = -6.833 m/s a = -6.8333 / 3.56 = -1.919 m/s2  

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

higher potential

explanation:

because it is in a high speed so it must move into a of high potential