1.

a ball is thrown downward from the top of building and reaches the ground in 3 sec what is the height of building

Answer»

ʜᴇʟʟᴏ ᴍᴀᴛᴇ!

Here, things to be noticed are

A ball is thown from up to down, from terrace hence,

u ( initial VELOCITY ) = 0

Time taken = 3s

Acceleration due to gravity = 10 m/s²

s = UT + 1/2 ( at² )

s = (0)(3) + 1/2 (10)(3)²

s = 0 + 5*9

s = 45 m

Hence, HEIGHT of building is 45 m.

Hope it helps



Discussion

No Comment Found

Related InterviewSolutions