1.)is true
2.)True
IK these are correct i did these before
Answer:
answer = 22.5m
Explanation:
using

s= (0²-21²)/2(-9.8)
s= -441/19.6
s= 22.5m
do consider marking as Brainliest if this helped!!
5.241 in scientific notation
5.241 × 10^0
Answer:
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Answer: NO2, NO, and O2.
<span>Free radicals are toxic substances produced by the body. In normal circumstances,the body can neutralize but<span>
when the level of these substances is to much,they accumulate
and can generate diseases,
such as osteoporosis and cancer.</span></span>