hypersonic759 hypersonic759
  • 02-10-2019
  • Physics
contestada

a ball rolls start at the top of a hill and rolls down with a velocity of 24m/s after 8s. what is the velocity of the ball?​

Respuesta :

skyluke89
skyluke89 skyluke89
  • 03-10-2019

Answer:

[tex]3 m/s^2[/tex]

Explanation:

I assume you are asking for the acceleration of the ball, not the velocity (in fact, the velocity is already given).

The acceleration is:

[tex]a=\frac{v-u}{t}[/tex]

where in this case we have:

v = 24 m/s is the final velocity

u = 0 is the initial velocity

t = 8 s is the time interval for the velocity to change

Solving the equation,

[tex]a=\frac{24-0}{8}=3 m/s^2[/tex]

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