Elastic vs Inelastic

The differentiate between Elastic and Inelastic that Elastic is like let's say if I have two cars and I roll them at the same time there going to bounce off each so that's what Elastic is with to object bounce off each other and Inelastic is like two magnets you but them together they stay stick together so that what Inelastic is when to object or item sticks together.

Elastic Collision

I think that a train has momentum because it has a bigger mass and if it starts running / moving it will go at a faster speed then the skateboard. The skateboard doesn't because it has a small mass and depends on the person who using the skateboard and if the person gets off the skateboard the skateboard will keep going into it loses energy and then completely stops. 

Work vs. Power

Work is when you put in work to a object to make it move. Power is a rate where  work is done. When I run and dribowl the ball I put a lot of power and when I walk I but less power. 

Mass and Newton's 1st Law

An object at rest stay at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. One example that happens in my own time is when I play basketball with my friends every time I dribble the ball the ball goes on a fast speed because at first it wasn't moving so my force and pressure made it move and bounce around , it shows inertia because I think that inertia is about mass and speed . A other example is when I'm playing volleyball when I spike the ball the pressure of my hand makes the ball go over the net , it shows inertia because of speed. A other example is if you try to pull a table cloth without knocking out what's on top of it, to but the very end on the cloth on the table and then pull it with your two hands very fast if you do it slow it wouldn't work. It shows inertia because it's about weight mas speed. 

Inertia Investigation

Inertia happens in my own time for example , when I'm using my phone I'm not moving but my body cells are and my fingers too because I'm typing etc. Other inertia the happens in my own time is  when I sleeping I staying still but if I have for a example nightmares I going to start moving because of the reaction and imagines that I see in my dreams and if I'm still sleeping im still move why because of my body cells they are still active on less I die. Really everything I do in my own time it with moving because my body cells are active all time , even if you stop moving you're still moving because of you body cells.  

Mu-Friction

I think frictions happens because of the gravity the earth pulls on us . The biggest surface was cardboard , it was like different because we used a box and we didn't use a shoe we used a boat and maybe the boat and maybe the cardboard doesn't attracts one a other. 

Free Body Diagram

My little brother has a bronke leg and his walking on crunshes. When his walking he but's  weight on the crunshes and gravity pulls on him and the crunshes, so you are adding more weight on gravity. 

Balanced and Unbalanced

 A balanced force is when two numbers are the same and equal zero, Ex: if it is at a constant velocity or stationary then the arrows are balanced. A unbalanced force is when two numbers are different and equal to a other number that's it's not zero, Ex: if it is accelerating, then the arrows are unbalanced. 

Salar vs. Vector

Salar: a quantity with only magnitude (or size). Vector: used for force , acceleration , velocity, and other items that need to show a magnitude and direction. Salar and vector are almost the same thing but salar doesn't have force but neither then that they both have the same things in common. 

Four Force

  The first force is applied force is when you push or pull that is caused by a object or a person. When my mom want to change the couches when have to push the couches across the floor. The second force is gravitational force is when two objects attracting one other with a force, like two magnet they are attract one other. The third force is normal force is when a surface is pushing up or against gravity, my phone is on top of my notebook and I push my notebook across the table. The fourth force is tension force is when you use a string or a object that is made of the same material, I pull the string of the window to bring the shades up . 

Acceleration

So I'm cuessing the sport car is faster the school bus. Because of course a sport car in going to be faster the a school bus because the bus is heavier the a sport car and plus I think that a sport car has a very fast speed limit and a school bus ahead a very slow speed limit. 

Guess Method

 Step 1:G you have to find the given which is the distance and time.

 Step 2: U you need to find the unknown the unknown is like what is missing from the problem. 

 Step 3: E  is when you have to find the equation to solve the problem.

 Step 4: S is the substitute is when you have to plot the real numbers solve the problem.

 Step 5: S is you solve the problem and MAKE SURE YOU CIRCLE THE ANSWER OR DO SOMETHING TO THE ANSWER TO SHOW MS.REID THE IS THAT ANSWER!!!! 😂😂 if not you will lose points.

Distance vs Time Graphs

 Today in class we learned about motion and we got to use motion detector it was really great/fun and we had to match a graph that was on the computer and it was green it was hard because you had to move backwards and forwards to match the the other graph that was on the computer and try to make exactly like  it . I think that my group did a awesome hop because they tryed there best to make it like that other graph and we also did a great job on how to take turns to the computer and things like that and we not fighting about it. 

Distance vs. Displacement

 Displacement is when your moving something or a object for where it started. Like today in class Ms.Reid started at x=2 and the she walked 4 to the right so here final is going to be at x=6. Distance is how far you went for a point to a other point. Like today in class when we did that classwork lets say I started at 2cm and I got 4 to the right, then 1 to the left my distance was 5cm because I moved 5 times. 

Barbie Bungee Data Estimates

My estimate for the drop of a barbie with 10 rubber bands is going to be at least around 140 cm because every time we drop the barbie it will double or be more then the first try you did. My estimate for the drop with the 20 rubber is at least around 160/170cm because every time I did that experiment that drop will always double the (cm). For the drop of the barbie with 30 rubber it's at least going to be around 200cm or 210cm depending how many times you do it. 

Metric Units

 We use metric in science class instead of english units because maybe is a much easier system to conversion from one unit to another unit. 

  1. Milk

  2. A measuring cup 

  3. Pencil 

Estimating Distances

 The length of the front my house is exactly 2 meters because it has a tree in the front of my house. 

Step 1: I measure the front of my house with my feet. 

Step 2: 4 steps are/we're 1 meter 

Step 3: Then I count how many step I make, and every time I count to 4 it's 1 meter and so on. 

Reaction Time

                                                      

                

         
         Reaction time is the amount of time it takes you to react to something. One example is when you put your hand  5 cm below a ruler and see how fast you can catch it . Second example of a reaction is when your like texting and trying to catch the ruler at the same time to see how fast you can get it or if you can't . Third example is when your running to half of a basketball court will someone else try's to shot a point and see which one is faster.