Newton's First Law
Were Fig Newtons named after Sir Isaac Newton?
Maybe. It might have been named after the city, Newton Massachusetts
This is a type of catapult.
Trebuchet
Mangonel
Ballista
Compared to 1kg block of iron, a 2kg block of iron has twice as much _____?
Mass
What catapult is the most accurate?
Ballista
*DAILY QUADRUPLE*
Which example demonstrates Newton's Third Law?
A) When you jump off a small rowing boat into water, you will push yourself forward towards the water. The same force you used to push forward will make the boat move backwards.
B) When air rushes out of a balloon, the opposite reaction is that the balloon fall down.
C) It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one.
A) When you jump off a small rowing boat into water, you will push yourself forward towards the water. The same force you used to push forward will make the boat move backwards.
(I will accept (C) if your group can explain how the mass works with the third law)
*DAILY DOUBLE*
What is inertia?
The natural tendency of objects to resist changes in their state of motion (an object in motion stays in motion or an object at rest stays at rest)
What catapult will launch a stone the farthest?
Trebuchet
If you are pushing equally on two objects, and one of the objects has five times more mass than the other, what will happen to the acceleration?
It will accelerate slower
What is a catapult?
A catapult is a device used to launch a projectile a great distance without the use of explosives
Does the third law focus on movement and motion?
No
When you stand on the ground, your weight pushes down on the floor and the floor _____.
Pushes back up on your feet
*DAILY DOUBLE*
The parts of the catapult system are the base, angle, flipstick, and _____.
Projectile
*DAILY DOUBLE*
Force is measured using this unit.
Newton (N)
What are the outcomes we will measure for our catapult competition?
Distance, Accuracy, Damage Inflicted
When swimming, what is the reaction force when the action force is when your hands are pushing on the water?
The water pushing back on your hand, causing you to move through the water
What unit is used when recording acceleration?
Meters per second squared (m/s^2)
This catapult uses a counterweight to generate the force used to propel a projectile.
A Trebuchet
What is the formula for this second law?
F = m*a
(F - force, m - mass, a - acceleration)
This catapult is what most people think of when they thick of a catapult.
A Mangonel
When you jump off a small rowboat into water, you will push yourself forward towards the water. The same force you used to push yourself forward will make the boat move _____.
Backwards
Which example demonstrates Newton's First Law?
A) A soccer ball kicked on a muddy field will not stop until it hits something.
B) A screw broken from a space shuttle will continue to fly through space for a distance equal to its initial speed.
C) If the car you are riding in suddenly crashes into the back of another car, the car will stop but you will continue to move forward until your seatbelt stops you.
C) If the car you are riding in suddenly crashes into the back of another car, the car will stop but you will continue to move forward until your seatbelt stopped you.
What are two ways to increase the impact of your projectile?
1 - Increase the mass of the projectile
2 - Increase the stored tension
3 - Increase counterweight of Trebuchet (increased impact as a result of increased propulsion)
When a force acting against an object is greater than the object's mass, what is produced?
Acceleration
Your projectile hits different parts of the target, but always hits the target.
This is an example of _____.
Hint: think back to last quarter.
Precision or Precise
TRUE or FALSE and WHY
Cheating on a test and then receiving a citation is an example of Newton's Third Law.
False, because Newton's three laws are related to "Motion" not school behaviors and consequences