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8. A dog runs with an initial speed of 7.5 m/s on a waxed floor. It slides to a stop in 15 sec. What
is the acceleration?
(10 Points)
O-7.5 m/s
-0.5 m/s2
O -7.5 m/s2
7.5 mi/hr

Respuesta :

dsdrajlin

Answer:

-0.5 m/s²

Explanation:

Step 1: Given data

  • Initial velocity of the dog (u): 7.5 m/s
  • Final velocity of the dog (v): 0 m/s (Stop)
  • Time elapsed (t): 15 s

Step 2: Calculate the acceleration of the dog

The acceleration (a) is equal to the change in the velocity over the time elapsed.

a = v - u / t

a = 0 m/s - 7.5 m/s / 15 s

a = -0.5 m/s²

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