Aprojectile falls beneath the straight-line path it would follow if there were no gravity. how many meters does it fall below this line if it has been traveling for 1 sec? 2 sec?

Explanation:

In order to solve the problem we will use the following newton's equation of motion.

S = ?

u (initial  velocity) = 0

g = 9.8

For t = 1 s

s = 4.9 m = 5m.

For t = 2 s

s = 19.6 m = 20m

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

nah.   i'm just sleepy.