What's Law got to do with it?
How many Laws of Motion are there?
Define 'force'.
Push or pull
Define 'inertia'.
The tendency for an object to do nothing or remain unchanged.
If F=MxA, then A=? and M=?
A=F/M, M=F/A
The 1st Law is known as the 'Law of _________'.
Inertia
What is the unit for force?
Newtons
What does the 3rd Law state?
For every action, there is an equal and opposite reaction.
What does the 2nd law state? NOT just the formula.
Acceleration depends on force and mass.
The 2nd Law uses what 3 variables?
Acceleration, Force, Mass
Give 3 examples of an UNBALANCED force.
Pushing a desk, kicking a ball, etc.
What is the unit for acceleration?
A lamp sitting on a table is an example of which law?
Newton's 1st Law
Give 2 real-life examples of Newton's 3rd Law.
Rocket, kicking off side of pool, riding a bike etc.
True/False: Balanced forces always result in objects at rest.
False. Objects can be at a constant rate.
What is the unit for mass?
Kg, kilograms
The man pushes a 25kg cabinet across the room at an acceleration of 4m/s/s... How much force has he applied?
100N
25kg x 4m/s/s = 100N
What does the 1st law state?
An object in motion will remain in motion, and an object at rest will remain at rest - unless acted on by an unbalanced force.
A balanced force has forces that are ______ and __________.
Equal, opposite
What is the difference between SPEED and VELOCITY?
Velocity includes a direction.
Mark slides a 2kg book across the table with a force of 28N - How fast does it accelerate?
14m/s/s
28N / 2kg = 14m/s/s