Question

An object is thrown vertically upwards and rises to a height of 20m. Then
the velocity with which the object was thrown upward is (g = 10 m/s square )
option :
a)15 m/s
b)25 m/s
c) 10 m/s
d)20 m/s
​

Answer 1

Answer:

20m/s

Explanation:

Using

v²=u²+2aS

v=0, a=-g=-10, S=20,u=?

0²=u²+2*-10*20

-u²=-400

u²=400

u=20m/s

Answer 2

Answer:

this is your answer

Explanation:

hope you understand please make me Brainlist answer