Answer:
the answer is a
Explanation:
I think That All the atoms of a given element are identical in that they have the same number of protons
its b
B
t = 2s
u = 0m/s (released from rest)
a = +g = 9.8m/s²
s = H = ?
using,
s = ut + 1/2at²
H = 0(2) + 1/2(9.8)(2²)
H = 0 + 9.8(2)
s = H = 19.6m
