A wave that can travel through empty space? A. electromagnetic wave
B. mechanical wave
C. compressional wave
D. transverse wave

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

ill do it for 100, also this isnt 80 its 40

v=ir = 3x15 =45 v