Question

A ball is thrown up with a velocity of 10m/s from the top of a tower 495m.find the time taken by to reach the ground?​

Answer 1

Answer:

u = +10m/s, a = -10m/s² and s= -40m (at the point where stone strikes the ground)

Substituting in s = ut + 1/2at², we have

-40 = 10t - 5t²

or 5t² - 10t - 40 = 0

or t² - 2t - 80

Solving this, we have t = 4s and -2s. Taking the positive value t = 4s.

Explanation:

Hope this helps you unnie ❣️

Answer 2

Answer:

... ... ...

Explanation:

Merry Christmas ☃️⛄ Ankita Unnie.

Solly I didn't talk to u.

i miss u.

I will talk to u aft I come from mom's house on 27th.

Unnie I g u left tg.

last time I went u were off for a month.

tc.

enjoy holidays.

lob ya♥

saarangheyo❤️

Unnie u can give reply in ur b.i.o I will only see aft 26th.