Answer:
four covalent bonds is the answer
33.34km
Explanation:
S=Vxt
0.167hr x 200km/hr
ans=33.34km
4.8 is the correct answer
reflection
Dropping a stone from a height is work
Work is the action of a force through a distance.
w = fd
The Earth's gravitational attractive force is pulling the stone to its centre, so the Earth is doing work on the stone.