Question

what is the final velocity of a freely falling body after 4sec​

Answer 1

$\huge\bold\blue{Question}$

What is the final velocity of a freely falling body after 4sec?

$\bold\red{\underline{\underline{Answer:}}}$

39.2m/s will be the final velocity after 4sec

$\bold\purple{Explanation}$

For freely falling object,

Acceleration=Force of gravity,

i.e

a=g

Initial velocity=0

i.e

u=0

$\bold\blue{Given}$

Object is in free fall.

Time(t)=4sec

$\bold\pink{To \ find}$

Final velocity after 4seconds.

$\bold\green{\underline{\underline{Solution}}}$

According to Newton's first equation of motion.

v=u+at

v=0+9.8(4)

v=39.2m/s