What is the weight of an object on the earth with a mass of 70 kg.
(g= 10 m/s2)

700N

Explanation:

mass= 70kg

g=10m/s²

weight=mg

=70×10

=700N

newton's first law of motion

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

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

c) both a and b.