What is the acceleration of a 30-kg object that is traveling at vi = 15 m/s and slows to
Ve= 5 m/s in 8 seconds?

-1.25m/s²

Explanation:

Given parameters:

Mass of object  = 30kg

Initial velocity  = 15m/s

Final velocity  = 5m/s

Time  = 8s

Unknown:

Acceleration of the object  = ?

Solution:

Acceleration is the rate of change of velocity with time.

  Acceleration =  

V is the final velocity

U is the initial velocity

t is the time taken

To solve this problem, insert the parameters:

   Acceleration  =   = -1.25m/s²

This shows that the object is decelerating.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."