2.4: Projectile Motion
2.5: The Range of Projectiles
2.8: PE and KE
2.9: Conser. of Energy
Grab Bag!
100
An object traveling through the air or other medium
What is a projectile?
100
Projectiles travel in the shape of a parabola and follow a path referred to as this.
What is trajectory?
100
This is referred to as "stored work".
What is energy?
100
This is conserved when there are no outside forces acting on the objects under consideration.
What is energy?
100
The man who came up with the three laws of motion
Who is Sir Isaac Newton?
200
The only type of force acting on an object in free fall.
What is gravity?
200
This number describes the acceleration of an object due to gravity for an object in free fall to planet Earth.
What is -9.8 m/s^2?
200
This law states that energy can neither be created nor destroyed.
What is the Law of Conservation of Energy?
200
The type of energy present when a jumper squats down.
What is elastic potential energy?
200
This letter represents the spring constant.
What is "k"?
300
The two types (directions) of motion that are independent of one another when an object is in free fall.
What are horizontal and vertical motion?
300
Increasing this will decrease the range of a projectile.
What is the angle?
300
These are the four types of energy.
What are work, elastic potential energy, gravitational potential energy, and kinetic energy?
300
These types of energy are present when a person is in between squatting and heading toward the peak.
What are gravitational potential and kinetic energy?
300
This is the force of attraction between two bodies due to their masses.
What is gravity?
400
For an object in free fall, this remains constant in the horizontal direction, but changes at a rate of -9.8 in the vertical direction.
What is velocity?
400
This number is the angle at which a launched projectile will travel the farthest.
What is 45 degrees?
400
The equation for work and what the variables stand for.
What is W=Fxd where F is force and d is distance/displacement?
400
These are the three positions of the jumper and the types of energy that are present at each position.
What are ready (EPE), launch (KE and GPE), and peak (GPE)?
400
This law states that the acceleration of an object is directly proportional to its force and inversely proportional to its mass.
What is Newton's Second Law of Motion?
500
These three factors determine the range of a projectile.
What are initial velocity, the angle, and the height?
500
These are the two types of models used by scientists to explain a certain event in science.
What are mathematical and physical?
500
The standard unit for energy
What is the Joule?
500
This is the amount of kinetic energy present if the total energy of the system is 200 J, the gravitational potential energy is 60 J, and the elastic potential energy is 40 J.
What is 100 J?
500
Name one real-world example of a projectile.
What is (answers will vary)?