Acyclist is riding his bike up a mountain trail. when he starts up the trail, he is going 8 m/s. as the trail gets steeper, he slows to 3 m/s in 1 minuet. what is the cyclist acceleration

Acceleration  =  (change in speed) / (time for the change)

Change in speed = (speed at the end) - (speed at the beginning)

                            =         (3 m/s)           -       (8 m/s)

                            =                      -5 m/s .

Time for the change  =  1 minuet = 2 sonatas = 60 seconds

Acceleration  =  (-5 m/s) / (60 seconds)

                      =     - 1/12  m/s²

                      =      0.0833  m/s²

                      =        8-1/3  cm/s²  

Letter a i’d go with