Question

a ball is thrown upward from a ground at a tower with a speed of 20m/s.find the height of the tower. If g=10m/s^2​

Answer 1

Answer:

20 m

Explanation:-

v= 0 m/s

u= 20 m/s

g= -10 m/s^2

h= ?

Using 3rd law of motion,

v^2- u^2 = 2gh

0^2- 20^2 = 2*(-10)*h

0- 400 = -20h

-400/-20 = h

h = 20 m

Hope it helps you.