Answer:
The acceleration is -6 m/s2
Step-by-step explanation:
The equation for the speed of a body is
V = Vo + a t
Where
Vo is the initial velocity, a is the acceleration and t is the time,
When the body stops the speed is zero
0 = Vo + a t
a = Vo / t
substitute values
a = - 30/5
a = - 6 m/s2
The negative sign indicates that acceleration opposite movement