HESI A2 – PHYSICS STUDY GUIDE WITH ALL
CORRECT & VERIFIED ANSWERS
Average Speed Correct answer-the distance an object travels divided by the time the object travels
without regard to direction of travel
average speed = d/t
Velocity Correct answer-refers to speed in a specific direction
Scalar Quantity Correct answer-quantity described simply by a numeric value and is expressed in
units of magnitude
Vector Quantity Correct answer-quantity describing the time rate of change of an object's position
and must be expressed in both units of magnitude and direction of motion
Average Velocity Correct answer-determined by averaging the initial speed and the final speed of
the object
Acceleration Correct answer-the rate of change in velocity over a period of time
Projectile Motion Correct answer-it is possible for an object to display two types of motion
simultaneously
Force Correct answer-defined as a push or a pull on an object
Newton's First Law of Motion Correct answer-states that the body at rest will remain at rest, and
the body in motion will remain in motion with a constant velocity, unless acted on by an unbalanced
force; F=ka
Newton's Second Law of Motion Correct answer-the constant of proportionality is equal to the
mass of the object; F=ma
Newton (N) Correct answer-the unit of force and is equal to the force necessary to accelerate a
mass of one kilogram one meter per second per second
Newton's Third Law of Motion Correct answer-states that for every action there must be an equal
and opposite reaction
Friction Correct answer-a force that opposes motion and is expressed in newtons
Centripetal Acceleration Correct answer-rotational motion equivalent of acceleration
Kinetic Energy Correct answer-the energy resulting from the motion of the object
Potential Energy Correct answer-the energy the object has because of its position
Joules Correct answer-a newton-meter or a kilogram-meter squared per second squared; unit of
measurement for kinetic energy and potential energy
Impulse Equation Correct answer-a force applied over a period of time is an impulse
CORRECT & VERIFIED ANSWERS
Average Speed Correct answer-the distance an object travels divided by the time the object travels
without regard to direction of travel
average speed = d/t
Velocity Correct answer-refers to speed in a specific direction
Scalar Quantity Correct answer-quantity described simply by a numeric value and is expressed in
units of magnitude
Vector Quantity Correct answer-quantity describing the time rate of change of an object's position
and must be expressed in both units of magnitude and direction of motion
Average Velocity Correct answer-determined by averaging the initial speed and the final speed of
the object
Acceleration Correct answer-the rate of change in velocity over a period of time
Projectile Motion Correct answer-it is possible for an object to display two types of motion
simultaneously
Force Correct answer-defined as a push or a pull on an object
Newton's First Law of Motion Correct answer-states that the body at rest will remain at rest, and
the body in motion will remain in motion with a constant velocity, unless acted on by an unbalanced
force; F=ka
Newton's Second Law of Motion Correct answer-the constant of proportionality is equal to the
mass of the object; F=ma
Newton (N) Correct answer-the unit of force and is equal to the force necessary to accelerate a
mass of one kilogram one meter per second per second
Newton's Third Law of Motion Correct answer-states that for every action there must be an equal
and opposite reaction
Friction Correct answer-a force that opposes motion and is expressed in newtons
Centripetal Acceleration Correct answer-rotational motion equivalent of acceleration
Kinetic Energy Correct answer-the energy resulting from the motion of the object
Potential Energy Correct answer-the energy the object has because of its position
Joules Correct answer-a newton-meter or a kilogram-meter squared per second squared; unit of
measurement for kinetic energy and potential energy
Impulse Equation Correct answer-a force applied over a period of time is an impulse
