Newton's Laws of Motion
True or false: This is an example of Newton's 1st law of motion:
You are playing tug of war and you are winning so the rope is pulled away
FALSE. That is an example of the 2nd law of motion
True or false: A unbalanced force means the object is at equilibrium.
false
True or false: an object will not move unless a force acts on it
true
True or False: A balanced force will cause acceleration
False
A book is resting on a table and an unbalanced force causes it to slide from left to right across the table. This means the side to side forces are unbalanced.
Are the upward and downward forces at equilibrium?
yes, because the book is still flat against the table.
Which law of motion does this scenario apply to:
A pebble is dropped in a pond and ripples begin forming.
Newton's third law of motion
Show or demonstrate an example of an unbalanced force
example: pencil falling
Explain how even when we are not moving, there is still motion
The Earth is constantly moving around the sun, and the the sun around our galaxy.
Show/ demonstrate an example of a balanced force
someone sitting in chair
What factors affect the forces of gravity? Name at least 2
weight, density, shape,
Give an example of Newton's first law of motion
A car will stay stopped until accelerated
Blades on a fan will not move until there is wind
Describe what an "unbalanced force" means
A force that changes the position, speed or direction of an object. An unbalanced force will cause an object to accelerate in some way.
Explain the differences between complex and simple movements
simple:movements in a straight line or a constant speed
Complex: When an object changes directions (curved or circular movements).
describe a "balanced force"
When 2 equal forces act on an object in opposite directions
Who is Sir Isaac Newton?
name at least 2 things he was (be specific: what kind of scientist was he? ), and what he created
1) A mathematician, physicist, author and astronomer.
2) Wrote the 3 laws of motion "Newton's laws of Motion
What are Newton's three laws of motion?
1- objects will stay at rest until an outside force acts on it
2- only an unbalanced force causes acceleration
3- Every force has an equal and opposite force
What is the 2nd law of motion?
Only an unbalanced force causes acceleration
Use the whiteboard to draw an example of a complex movement, and a simple movement
examples may vary
Explain how a book resting on a table is an example of a balanced force
One force is the Earth's gravitational pull downward on the book, and the second force is the table pushing upward on the book.
Give an example for each of Newton's Laws of motion
1) book on table stay still
2) tug of war, kicking a soccer ball, someone getting pushed
3) Rocket being launched, rowing a boat/ canoe/ kayak, dropping something and it leaves a dent.