Newton's Laws of Motion
Which law? A body at rest tends to stay at rest.
First Law of Motion
What is the formula for speed? S = speed, d= distance and t=time
S=d/t
What is the definition of a force?
A push or pull on an object.
What is an observation?
Description of something that is either qualitative or quantitative.
To suggest something means to _________
Imply
If an object moves 120 meters over 60 seconds what is the speed of the object? S=d/t
S=d/t 120 meters / 60 seconds = 2 meters/second
Friction and gravity are types of _________
forces
What is a qualitative observation? Give an example.
An observation that does not include quantities or numbers. The Bald Eagle has black feathers.
What is research?
Which law? Force (Newtons) = mass x acceleration
Second Law
Velocity is best defined as speed with _________
S.peed with a direction
The object is not in motion because the forces are balanced on the object.
What is a quantitative observation?
An observation that included quantities or numbers. The Bald Eagle has 600 black feathers.
What is the difference between distance and displacement?
Distance is how far an object travels and displacement is how far an object moves from it's starting point.
Which law? Also known as the law of inertia.
First Law of Motionm
Julian rides his bike for 360 kilometers to the south and it takes him 60 minutes. How fast and in which direction is he moving?
Use the formula S=d/t Velocity = 360 kilometers / 60 minutes = 6 kilometers/minute south. ALWAYS REMEMBER THE DIRECTION WHEN WE WRITE OUR ANSWER FOR VELOCITY.
When forces are unbalanced on an object, the object is ________.
The object is moving or in motion.
What type of observation would the following be, qualitative or quantitative? There are three brown and white dogs drinking water from the pond.
Quantitative observation
Define acceleration.
Acceleration is when an object speeds up, slows down or changes direction. Often we say that an object is accelerating when it's velocity is changes.
Give an example of the Newton's Third Law of Motion.
When an action occurs there is an equal and opposite reaction. When stepping off of a boat onto a dock the boat will move away from the dock as the person steps forward.
How far did Emily travel if she rode her bike at a rate of 2 kilometers/hour in on hour? Hint you are looking for the distance she traveled so you need to change the formula S=d/t to get your answer.
Original formula is S= d/t or Distance = speed x time So! 2 kilometers (distance) x 1 hour (time) = 2 kilometers.
Name four types of friction and give an example of each type of friction.
1. rolling friction - friction that occurs when an object rolls over a fixed object. Roller coaster wheels on a track 2. static friction - friction between two objects when there is no motion. A box on the floor. 3. sliding friction - friction between objects when objects are sliding on each other. Your hands rubbing together. 4. fluid friction - friction between an object and a liquid. Swimming in water.
What type of observation would the following be, quantitative or qualitative? Dogs have brown and white fur.
Quantitative observation
Define momentum and how an object's momentum is calculated.
Momentum is the force that a moving body has and is calculated by multiplying an object's mass by its velocity.