Question

answer this given question​

Answer 1

hey dude

answer is 5

Explanation:

S=100m

u=40m/S

v=0m/S

a=?

t=?

1st A/Q for a

v^2-u^2=2as

0^2 -40^2=2×a×100

-1600=200a

a = -8m/s^2

2nd A/Q for t

v=u+at

0=40+(-8) ×t

-40=-8t

t=5

hope bro u like this.

Answer 2

Answer:

5 sec

Explanation:

s = 100 m

u = 40 m/s

v = 0 m/ s

a = ?

t = ?

First we find (a) by

v² - u² = 2as

=> 0² - 40² = 2× a×100

=> -1600 = 200a

=> a = -8 m/s²

Now we find (t) by

v = u + at

=> O = 40 + (-8)t

=> -40 = -8t

=> t = 5s