Question

a ball is thrown vertically up from the top of the building with a velocity of 10 metre per second full stop it reaches the ground in 5 second. find the height of the building and the velocity with which the body reaches the ground​

Answer 1

Answer:

...

Height of building = 75 m and...

speed when object reaches ground is = 40m/s...

Explanation:

...

H= ut+1/2gt²

H= -10×5+1/2×10×5×5

H= -50+125

H= 75m...

v= u+ at

v= -10+ 10×5

v=-10 + 50

v= 40 m/s