Balloon Rocket Challenge and Newton's 1st, 2nd & 3rd Laws of Motion

Hello to everyone!

Thursday the 27th and Friday the 28th were busy classes for us!

Thursday began with Ms.D checking our homework which was to take notes about Newton's 2nd and 3rd Laws. When she was done checking she put on the board a word document with all the notes that should have been taken, and we all went over them, adding what we didn't have because we will later take a test, and we should know these things. In case you didn't know or weren't there, here are the notes;

Newton's First Law of Motion-

• An object at rest will remain at rest and an object in motion at a constant velocity (speed + direction) will stay in motion unless acted upon by an unbalanced force.
• It tells us that force is needed for acceleration.
• It is friction that causes moving objects to stop, not the removal of force.
• Examples:
• - When you are in a moving car and it stops suddenly you fall backwards.
• - When you are in a moving car and you go around a sharp turn quickly, you bump into the side of the car.
• Newton's First law of Motion is mostly Inertia.

Ms. D also said to be sure to have the definition of Inertia written down.

Inertia-

• Inertia- The tendency for objects at rest to stay at rest.
• The more mass an object has, the more inertia it has, and the more force required to move it is needed.

Newton's second Law of Motion-

• The main concept is- Mass * Acceleration. (F= ma)
• Explains how force and acceleration are related.
• More force = more acceleration for any given object.
• If you push something harder, it will go faster. ( example- if you push a grocery cart harder, it will move faster.)
• The objects with more mass (or more inertia) require more force applied to move them. (example- a cart with more groceries will require more force).
• The unit used for force is Newton
• - 1N= 1 kg (mass) * 1 m/s/s (acceleration)
• - 1N is how much force is needed to accelerate 1kg at a rate of 1 m/s/s.

Ms.D suggests you write the examples down or remember them. She also wrote that you need to be able to use the formula F=ma to perform calculations and explain everyday situations. She then WARNED that the next challenge is going to need and use MASS.

Newton's Third law of Motion

• For every action there is an equal and opposite reaction.
• In other words forces come in pairs (push-pull)
• All objects exert forces (even if it doesn't seem like it)
• Example;
• - When you are standing on the floor, you exert a force back on you (remember, only balanced forces result in no movement).

When we were done taking notes, Ms. D made us find 4 groups, with every group having 3 people in it, for our lab.

When that was done and Ms.D agreed, these where the groups that came out;

• Jakub, Ghazaleh, and Maria Chiara.
• Davide, Courtney, and Karin.
• Nathan, Ben, and David.
• Tamara, Valentina, and Emilija.

Ms.D then went further into explaining that out lab, or challenge, is that we have to make a Rocket Balloon with the following things;

• 2 straws,
• a piece of string,
• 2 Big Balloons,
• Tape.

This is a model of what can be made out of these objects.

She then told us that if we wanted to add any other objects to the testing we first had to ask her.

We will have a race on February 10th, were we will test our balloons depending on the race we choose our Balloons to run for.

These were the choices;

• The Balloon that went the furthest.
• The Balloon that went the fastest.
• The Balloon that went Up and back down, turned.

She then gave us black balloons to work and begin testing our labs. Unfortunately the black balloons didn't work well, but we still began.

On Friday we continued with the testing, but Ms.D brought bigger Balloons that stretched farther. She then gave a suggestion which was to measure the Balloon's circumference once it reached the right form that you wanted, and make all of them the same to make the science more correct.

She also began telling us some CVs and UVs, which are the following;

CVs-

• The length of the string for the fastest and farthest, (which is 15m) and the length of the string for the changing direction (4m)
• Only 2 Balloons are used.
• Only 2 straws are used.
• The Balloons have the same diameter each time.
• The same person from the group measures distance.
• The same person from the group uses stop watch and times the speed.
• The same person from the group lets the balloon go.
• The same straws and balloons are used during the testing unless something occurs to prevent that.

UVs-

• If the balloon stretches.
• If the straw bends.
• If the string bends or the knot loosens.

These aren't the only ones, but they are the only ones we discussed in class. That was it for the two days, and no homework was given except to think of what the balloon's shape could be, and what we could change or add to the rockets to improve them!

Hope you enjoyed reading my blog and the next scriber is....DRUM ROLL......GHAZALEH!

Karin and davide attaching the balloon to the

straws.

Tamara moving the string to the opposite

side when the testing was finished.

Davide and karin preparing for the testing, Karin blowing the ballooon up and davide taking out the string.