Answer:
A) s=1/2at^2
t=√(2s/a)=√(2x400)/10.0)=9.0s
B) v=at
v=10.0x9=90m/s
9 m
Explanation:
i did the test and got 100%
A wagon is pulled at an angle of 30 degrees to the horizontal.
I think
D : Hydrogen gas has two atom , and oxygen has one atom
physical
how thick something is is a physical trait, so it's a physical property!