AC-HPAT STUDY QUESTION WELL PERFORMED 2024.

scalar quantity - AnswersA quantity in physics, such as mass (m), distance (d), time (t), speed (v), temperature (T) , that can be completely specified by its magnitude, and has no direction. A vector quantity - Answersa quantity that has both magnitude and direction. Displacement (d), velocity (v), and acceleration (a) distance - AnswersDistance = d , which = meters (m) Speed - AnswersSpeed = v = meters/s (m/s) Time - AnswersTime = t = seconds (s) distance definition - AnswersThe amount of space between two objects or how far a particular object travelled over a certain time interval. Measured in (cm), metres (m), or kilometres ( km) Time definition - AnswersT, the duration between two events. Usually measured in seconds, minutes, or hours Speed - AnswersV, refers to the distance covered in a time interval. Formula for speed - Answerss=d/t or speed= distance/ time instantaneous speed - Answersthe speed of an object at one instant of time Constant speed - AnswersMoving at a steady rate over time Displacement - Answersthe change in position of an object displacement formula - AnswersDelta d= d2 - d1 delta d is the change in position d2 is the final position with reference to a point d1 is the initial position with reference to a point Calculations involving vectors - AnswersWhen doing calculations involving vectors you must always consider the direction. For instance, a positive value should be assigned to east. north, up, and towards the right. While negative values should be assigned to west, south, down and towards the left. Velocity - AnswersRepresents the change in position over a particular time interval. V= delta d/ delta t Acceleration - Answersa, describes all situations in which an objects speed is changing. Newton's First Law - AnswersAll objects will remain in a state of rest or continue to move with a constant velocity unless acted on by an unbalanced force. This law is known as the "law of inertia" Applications of this law are: seatbelts & whiplash Inertia - AnswersThe tendency of an object to resist a change in motion Newton's Second Law - AnswersF net = ma ( m is mass, a is acceleration) Of an object experiences a net external force, F net, not equal to zero, then the object will accelerate in the direction of that force. The amount of acceleration is directly proportional to force and indirectly proportional to mass. Directly proportional implies that if one quantity increases than the other one will also increase. Whereas indirectly proportional implies that if one quantity increases the other quantity must decrease. Dynamics - AnswersThe study of forces and their contribution to the motion of an object. Newton's 3rd Law - AnswersFor every action there is an equal and opposite reaction. When a ball hits a bat Action: the ball forces the bat to the left Reaction: the bat forced the ball to the right Also, if you push on a wall with a force of 5.0 N then the wall will push back on you with a force of 5.0 N Mass - Answersthe amount of matter in an object ( measured in kg) Weight - AnswersA measure of the force of gravity on an object ( using Newton's, N) Forces - AnswersA push or a pull on an object force of gravity - AnswersThe force of attraction between all objects. The only downward force acting on a free falling object is gravity and it causes objects to accelerate at a force of 9.86 m/s2 (down) normal force - Answersthe support force exerted upon an object that is in contact with another stable object