Question

the velocity of a moving body changes at a constant rate from 50 m/s to 20 m/s in 3 sec. find acceleration

Answer 1

50-20/3

30/3

10m/square seconds

Answer 2

acceleration=(v-u)÷t        where v is the final velocity, u is the initial velocity
                    =(20-50)÷3     and t is the time taken
                    = -30÷3
                    = -10m/s²