Question

a particle is projected up from top of a tower with vel.10m/s .It reaches ground in 5s. Find-striking velocity at ground?? plzzz answer plzzzz

Answer 1

u = -10 m/s
t = 5 seconds
g = 10 m/s^2
Now,

v = u+gt
v = -10 + 10(5)
= 40 m/s

Therefore the particle will strike the ground at a speed of 40 m/s.