An object tends to stay at rest or stay in motion unless acted on by an outside _________.
What is a force?
The tendency of an object to not accelerate.
What is inertia?
When forces cancel each other out they are said to be____________.
What is balanced force
For every action, there is an equal but opposite________.
reaction
This happens when you drop three balls of different masses from the same height without air resistance.
They hit the floor at the same time
Velocity is the _________ of something in _________
what is the speed direction
For every force, there is an equal and _________force
What is opposite
If a feather and a ball are dropped on the moon from the same distance at the same time, which one will hit the ground first?
They hit the ground at the same time
The forces that act on the plane when it is taking off are_______.
unbalanced force
The force of gravity increases between two objects as their __________ increases
What is their masses increase