contestada

A penny was thrown downward at 2.4 m/s and falls under the influence of
gravity for 5 s. What is the final velocity of the penny?

Respuesta :

Answer:

v = 51.4 m/s

Explanation:

Given that,

Initial velocity of a penny, u = 2.4 m/s

It fall under the influence of gravity for 5 s.

We need to find the final velocity of the penny. Let v is its final velocity. It can be calculated using first equation of motion as follows :

[tex]v=u+at[/tex]

a = g

[tex]v=2.4+9.8(5)\\\\=51.4\ m/s[/tex]

So, the final velocity of the penny is 51.4 m/s.

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