contestada

If we have a velocity of 20 m/s and our acceleration is -5 m/s, then after 2 seconds our velocity will be....
a) 15 m/s
b) 40 m
c) 10 m/s
d) -10 m/s

Respuesta :

Answer:

v = 10 m/s

Explanation:

We have,

Our initial velocity is 20 m/s

Our acceleration, [tex]a=-5\ m/s^2[/tex]

It is required to find the velocity after 2 seconds. It is a concept based on equation of kinematics. Using first equation:

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

Plugging all the known values

[tex]v=20+(-5)(2)\\\\v=10\ m/s[/tex]

So, our final velocity is 10 m/s.

Otras preguntas