Vocab
What are constants?
The things that stay the same in an investigation.
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What are these arrows showing?
Constant motion, stable, balanced.
When the net force is zero. Is it unbalanced or balanced?
Balanced.
Does the sentence below mean the independent variable, dependent variable, or the constants?
The thing you test or change.
It is the independent variable.
What is Criteria?
What are Constraints?
Criteria: The goals you want to meet and a investigation.
Don't need, but want.
Constraints: The things you have to have to make your experiment successful.
What are vectors?
An arrow that represents a force in one direction.
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Are these forces balanced or unbalanced? And why?
Unbalanced, because the left arrow has a greater force than the right arrow.
How do you know when something is unbalanced (Net force)?
When the net force does not add up to zero.
Does the sentence below mean the independent variable, dependent variable, or the constants?
The outcome/result/measured result of the investigation.
It is the dependent variable.
You are making a crib for a toddler for a client, so it's more safer for the baby, and so that the baby can't get out of crib. Here are some things your client said.
The crib must be 45 pounds, it has to have tall enough columns around the crib area so the toddler can not get out, we want it to be big and very comfortable. Also, having it in the color yellow would be nice.
What is the problem you are being asked to solve in this problem?
What are the criteria and constraints?
Problem your being asked to solve: Making a crib that's safer for toddlers.
Criteria: Yellow color, comfortable, want it to be big.
Constraints: 45 pounds, good columns.
What is mass?
The amount of matter in an object.
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40n 35n
Are the forces balanced or unbalanced. If unbalanced what direction is the greater force going to?
Unbalanced, and the greater force is going to the right.
40 is greater than 35.
Two people who are 40 newtons each are pushing a box that's 70 newtons.
Will they be able to push the box? Is this a unbalanced or balanced force?
This is a unbalanced force, and yes the two people will be able to push the box.
40+40=80
80>70
I water my plants. They grow. I use the right amount of water everyday to water it. I give it the same amount of sunlight each day. Same soil.
What is the independent and dependent variable?
What are the constants?
Independent- Watering plants
Dependent- Plants grow
Constants- Right amount of water, sunlight, soil
Which newton law is this (1st, 2nd, or 3rd)?
Inertia (An object will stay at rest, unless a exerted force is acted upon it)
The 1st law.
What is acceleration?
Change in motion, due to objects changing speed.
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20n 10n
Are the forces here unbalanced or balanced? If unbalanced what direction is the greater force going to?
Unbalanced, the greater force is going to the right.
Two cars collide with one another.
One weighs 40 newtons, the other weighs 100 newtons. What car is going to have more damage?
The one that weighs 40 newtons.
The one with less newtons always gets more damage.
I brush my teeth everyday. Because of this I don't have any cavities. I make sure to put a right amount of toothpaste on my toothbrush, same toothpaste I brush my teeth for a specific amount of time, and I brush carefully and slowly.
What is the independent and dependent variable?
What are the Constants?
Independent- Brush teeth
Dependent- No cavities
Constants- Toothpaste, right amount of toothpaste, specific time brush, brush slowly and carefully
Which of Newtons laws is this one?
For every force/action there is an equal and opposite reaction.
The 3rd Law.
What does stable mean?
When the sum of the forces on an individual object add up to zero.
<--------- <---------
15n 20n
Are these forces balanced or unbalanced?
If unbalanced what direction is the greater force going to?
Bonus question: What is the Net force?
The force is unbalanced.
The greater force is going to the left.
The net force is 35.
When two objects of the same mass collide at the same speed what happens?
An equal reaction happens for both objects.
How many independent, dependent variables should there be in an investigation?
How many constants (control variable) should there be?
There should be 1 independent variable.
1 dependent variable.
Constants- There is not a specific amount of constants you need in an investigation. There are multiple constants for different investigations.
Which Newtons Law is this?
(acceleration = force/mass)
(F=ma)
The 2nd Law.