Answer:
[tex]-1.5 m/s^2[/tex]
Explanation:
The acceleration of an object is equal to the change in velocity of the object divided by the time taken for the object to change the velocity:
[tex]a=\frac{v-u}{t}[/tex]
where:
u is the initial velocity
v is the final velocity
t is the time taken for the velocity to change from u to v
For Ms Jackson in this problem, we have:
u = 6 m/s (initial velocity)
v = 0 m/s (final velocity)
t = 4 s (time elapsed)
Substituting into the equation, we find the acceleration:
[tex]a=\frac{0-6}{4}=-1.5 m/s^2[/tex]
And the negative sign indicates that the direction of the acceleration is opposite to the direction of motion.
