Respuesta :

Answer:

-2.5 m/s^2

Explanation:

v=u + at

or, a=(v-u)/t = (10-40)/12=-30/12=-2.5 m/s^2

Here, '-' indicates deceleration is occurring as the velocity is dropping with time.

Hope, this helps you.

subtofazeland2

Answer:

-2.5 m/s^2

Explanation:

more easyer