o_0

No other info was given.

Any help will be appreciated, many thanks!

erm... try

h= v^2/ 2g

wa the pic make ppl strain eyes

anyway,

Taking g = 10m/s²,

By the principle of conservation of energy,

change in KE = change in PE

½ mv² = mgh

½ (8)² = 10h

32 = 10h

h = 3.2 m

someone check my ans cos might be wrong, haven touch energy for quite long liao

using v^2 = u^2 + 2as

a = 10
v = 8
u = 0
so s = v^2 / 2a (darkie's formula)
you get answer = 3.2m

Alternatively, you can also use wishboy's method of COE

Many Thanks!!

KUM SIA!