Question

An iron ball thrown for.the tower strikes the ground with a velocity of 39.3 m/s. How long did it take to hit the ground (Use the value of g)

Answer 1

u= 0
v= 39.3m/s
a=g= 10m/s^2 (approx.)

WKT: v= u+at
So, t= v-u/a
t= 39.9-0/10
t= 3.93s