I don't Have the Energy
Use the Force
Fig Newton
All Systems Go
Luck of the Draw
100
What factors influence Potential Energy?
Mass and Height
100
What is the unit of force?
Newton
100
Which of Newton's 3 Laws explains why your hand would hurt if you punch a wall?
3rd Law. Every action has an equal and opposite reaction.
100
What is the definition of a system?
A group of related parts that make up a whole.
100
What 3 elements are needed to create a force diagram?
A representation of the object
The arrows to represent the forces
The labels of the forces
200
What factors influence Kinetic Energy?
Mass and Velocity
200
A box is being pushed to the left with 80N and pushed to the right of 50N. What is the net force acting on the box?
30N to the left
200
A bowling ball being thrown with a force of 25N knocks down all 10 pins for a strike! The same bowling ball now is thrown with a force of 10N and knocks down 5 pins.
Which of Newton's Laws applies to this scenario?
Newtons 2nd Law
F=ma
200
Identify the parts of the system of a rocket launch.
Rocket, launch pad, fuel, air, combustion, technicians....
200
Diagram an object with an applied force of 50N to the left and 100N to the right.
Net force of 50N to the right
The arrow on the right should be 2x as long as the arrow on the left
300
Why can't the cart ever reach position 5?
The Law of Conservation of Energy - The cart doesn't have enough energy to reach higher than its starting point (point 1)
300
Unbalanced
300
It is easier to outrun a moose if you zig-zag instead of running in a straight line.
Which of Newton's Laws best explains this?
Newton's 1st Law
The more massive an object is, the more it will resist a change in motion.
300
A crew of astronauts can survive on the International Space Station for months. Describe the system of the space station allowing the astronauts to live in space.
Oxygen, food, radio, engine, heat shield, solar panels...
300
Maddison, Johnny, and Jeff are playing tug-of-war. Maddison and Johnny are pulling to the left with a force of 125N each. Jeff is pulling with 225N of force to the right.
Net force of 25N to the left.
125+125 to the left: 250N
225N to the right
Left arrow should be slightly longer than right
400
Explain the energy of the cart at position 2.
It is halfway down the hill and still has about half of its original height. The energy is split evenly between Potential & Kinetic.
400
Mr Babington is riding his bike to school with a velocity of 5m/s north. Ms. Eisner is driving on the same street at a velocity of 15m/s north. Ms. Marelich is walking on the same street at 1 m/s south.
What is Ms. Eisner's speed from the reference point of Mr. Babington?
10 m/s
400
What two components make up a vector?
Magnitude (size) and Direction
400
These parts can be from what system?
A sink, garage, couch, door, lights, a tv
House
400
Diagram you sitting in your seat. (assuming no movement)
The only forces acting on you are gravity and normal force.
One arrow up and one arrow down
Both arrows are the same length
500
Two bowling balls are thrown down a lane. Ball A is 3kg and Ball B is 4kg. How can these two bowling balls have the same amount of Kinetic Energy?
Bowling Ball A must be traveling faster than Bowling Ball B.
500
Mr Babington is riding his bike to school with a velocity of 5m/s north. Ms. Eisner is driving on the same street at a velocity of 15m/s north. Ms. Marelich is walking on the same street at 1 m/s south.
What is Mr. Babington's speed from the reference point of Ms. Marelich?
6 m/s
500
What situation will cause an object to accelerate?
Need a hint?
An unbalanced force
500
Apply one of Newton's 3 laws to explain a rocket launch
1st Law: Without a force acting on the rocket, it will stay at rest until the engine ignites.
2nd Law: An incredibly large force must act upon the rocket in order for the rocket to move and accelerate.
3rd Law: The thrust from the rocket pushes downward against the atmosphere which applies an equal and opposite force upward.
500
Diagram a basketball in the air at the peak of the arc on its way to a basket. Include all forces!
The only forces acting on the ball are gravity and air resistance.
A lot of gravity, very little air resistance