A battery operated lamp because battery's don't use your own electricity. They come with electricity already.
Assuming the raindrop was stationary relative to the vertical distance to the ground at the start:
D=0.5at where d is distance, a is acceleration and t is time
D is 300 meters
a is 9.8 meter/sec squared
Solve for t in seconds
t = 61.2 seconds
v=at where v is velocity
a is 9.8 meters per second squared
t is 61.2 seconds
solve for v
v = 600 meters per second.
If it had an initial vertical velocity (v0) at the start :
d= 0.5at+v0t
and
v=at+v0
<span>The windchill index tells you A. how wind and temperature affect your body in winter. This is how you perceive the temperature outside due to the flow of air. The windchill index is always lower than the measured temperature outside. This is because wind increases the rate at which your body loses heat. For example, if it is 25 degrees outside, but there is a strong wind, the perceived temperature on your skin may be closer to 15 degrees.</span>
Distance is how far something moves in a specific amount of time.
