contestada

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?

Respuesta :

Answer:

-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 = [tex]\frac{V - U}{t}[/tex]  

V is the final velocity

U is the initial velocity

t is the time taken

To solve this problem, insert the parameters:

   Acceleration  = [tex]\frac{5- 15}{8}[/tex]   = -1.25m/s²

This shows that the object is decelerating.

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