Answer:
vận tốc bằng quãng đường chia thời gian
Explanation:
v=s/t
E = mc^2
m = e/c^2
m = 2.7*10^16/(300000^2)
m = 300000
Answer: 1. walking across a carpet and touching a metal door handle 2. pulling your hat off and having your hair stand on end.
Explanation
:)
Wee can use here kinematics
as we know that

for shorter tree we know that


now since we know that other tree is twice high
So height of other tree is y = 39.2 m
now again by above equation



so the time taken is 2.83 s