Question

A stone is thrown vertically upwards with a speed of 30 m/s. How high will it go before it
begins to fall. Acceleration is 10 m/s in the downward direction,
​

Answer 1

v=0

u=30m/sec

a= 10m/s²

t= 30/10 = 3sec

S=(v+u /2)t

S= (30/2) × 3

= 45 m

I think it may be correct