Question

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?

Answer 1

v = 51.4 m/s

Step-by-step 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 :

`v=u+at`

a = g

`v=2.4+9.8(5)\\\\=51.4\ m/s`

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