Exam 5/24/24: "What to Know" for Unit 1 Lessons 1 & 2 Flashcards
Science - Lessons 1 & 2
The rate of change of velocity over time, which is represented by the equation a = Δv/Δt, is called _________.
A.) Force
B.) Motion
C.) Acceleration
D.) Inertia
C.) Acceleration
**_________ is the rate of change of velocity over time, and is represented by the equation a = Δv/Δt.
A.) Unbalanced force
B.) Force
C.) Motion
D.) Speed
Force
____________ are forces that have equal magnitude and opposite directions. The net force is zero, and the object remains at rest or moves at a constant speed.
A.) Inertia
B.) Speed
C.) Velocity
D.) Balanced forces
Balanced forces
______________ are not equal in magnitude and may or may not be directed in the same direction.
A.) Motion
B.) Unbalanced forces
C.) Balanced forces
D.) Inertia
Unbalanced forces
____________ is the change in position of an object over time in relation to its surroundings. It can be described by distance, displacement, and speed.
A.) Inertia
B.) Speed
C.) Motion
D.) Friction
Motion
__________ is the tendency of an object to resist changes in its motion. For example, a resting object will remain at rest, and a moving object will keep moving, unless acted upon by an external force.
A.) Speed
B.) Inertia
C.) Velocity
D.) Friction
Inertia
________ is the rate at which an object moves and is dependent on the distance traveled and the time taken to travel that distance.
A.) Friction
B.) Velocity
C.) Speed
D.) Energy
Speed
____________ is the rate and direction of an object’s change in position. It is a vector quantity, which means it has both magnitude (speed) and direction. It is typically measured in meters per second (m/s).
A.) Friction
B.) Energy
C.) Velocity
D.) Speed
Velocity
__________ is a force that is created whenever two surfaces move or try to move across each other.
A.) Energy
B.) Potential energy
C.) Friction
D.) Speed
Friction
_______ is the ability to do work, such as moving an object by applying force. It can exist in many forms, including electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another.
A.) Friction
B.) Energy
C.) I have no idea
D.) Velocity
Energy
________ is the energy of motion, which can be observed in the movement of an object or subatomic particle. It is dependent on the movement of a particle along with its mass, and is quantified in units of joules.
A.) Potential energy
B.) Speed
C.) Kinetic energy
D.) Velocity
Kinetic energy
________ is energy stored in an object due to its position, properties, and forces acting on it. It’s one of the two primary forms of energy, along with kinetic energy, which is energy. It is independent of the motion of the particle and is solely computed when the object is at rest. It’s also quantified in units of joules.
A.) Kinetic energy
B.) No energy
C.) Potential energy
D.) Lots of energy
E.) Pikachu’s energy
Potential energy
True or false? Inertia is one of the fundamental principles in classical physics, and described by Isaac Newton in his first law of motion.
True
True or false? The force of static friction (fs) cancels out the applied force right up to and including when static friction reaches its maximum (fsmax).
True
True or false? Every moving object and particle has kinetic energy, including a person walking, a soaring baseball, a crumb falling from a table, and a charged particle in an electric field.
True
