3.
change in velocity over time
5.
push or pull with size and direction
6.
when calculating net force, you should add when they go in the ___ direction
7.
force that always opposes motion
8.
forces that cancel each other out (net force = 0)
9.
forces that cause a change in motion
10.
when calculating net force, you should ___ when they go in opposite directions
11.
matter continues in its existing motion
12.
for every action, there is an equal and opposite ____
14.
waves that go perpendicular (up and down) to movement
15.
waves that go in the same direction as the movement
16.
distance between waves
18.
how many times a wave passes in a second
19.
the ___ spectrum goes from radio waves to gamma waves
