Physics Unit 3: Acceleration Flashcards

Questions and Answers

What is the definition of Acceleration?

Distance covered per unit time

Change in velocity over time

Rate of change of velocity plus net result of forces (correct)

Constant change in speed

What is Average Acceleration?

Change in velocity divided by elapsed time

Constant Acceleration means that the velocity of a moving object does not change over time.

False

What is Velocity?

A physical vector quantity defined by both magnitude and direction Signup and view all the answers

How is Average Velocity calculated?

Displacement divided by time Signup and view all the answers

In a Velocity vs Time graph, the slope represents acceleration.

True Signup and view all the answers

What is Free Fall?

Motion of a body where its weight is the only force acting upon it Signup and view all the answers

What is the acceleration due to Gravity?

9.8 m/s^2 or 10 m/s^2 Signup and view all the answers

What is the formula for velocity in terms of acceleration and time?

v = at Signup and view all the answers

What does the formula d = 1/2(at^2) represent?

Displacement = 1/2(acceleration)(time squared) Signup and view all the answers

Constant Velocity means an object travels the same distance every second.

True Signup and view all the answers

What is Weight?

Force of gravity on the object defined as mass times acceleration of gravity Signup and view all the answers

What is Displacement?

Overall change in position of an object Signup and view all the answers

What are Motion Graphs or Diagrams?

Pictorial descriptions of an object in motion Signup and view all the answers

Study Notes

Acceleration

Defined as the rate of change of velocity, influenced by all forces acting on an object.
Formula: a = (v final - v initial) / (t final - t initial).
Measured in metres per second squared (m/s²).

Average Acceleration

Calculated as the change in velocity over an elapsed time.

Constant Acceleration

Occurs when an object's velocity remains unchanged during a time period.

Velocity

A vector quantity that includes both magnitude and direction.
Measured in meters per second (m/s).

Average Velocity

Determined by dividing displacement by the time taken.

Velocity vs Time Graph

Represents velocity (in m/s) on the y-axis; slope indicates acceleration.
Similar in structure to position vs time graphs.

Free Fall

The motion of a body solely affected by its weight, without any other forces acting on it.

Gravity

The universal force of attraction between all masses; near Earth's surface, its approximate value is 9.8 m/s² (often rounded to 10 m/s²).

Velocity Equation

Expressed as v = at, where v is velocity, a is acceleration, and t is time.

Displacement Equation

Given by d = 1/2(at²), relating displacement (d) to acceleration (a) and time (t).

Constant Velocity

Characterizes motion where an object covers equal distances in equal time intervals.

Weight

Defined as the force due to gravity acting on an object, calculated with w = mg (mass × acceleration due to gravity).
Measured in newtons (N) as a unit of force.

Displacement

A vector quantity reflecting the overall change in position of an object, or the difference between final and initial positions.

Motion Graphs or Diagrams

Visual representations of an object's movement that illustrate position, velocity, and acceleration at key points in time.

Description

Review key concepts related to acceleration in Physics with these flashcards. Understand terms like average acceleration and the mathematical definitions connected to Newton's Second Law. Perfect for students preparing for exams or needing a quick refresh on the unit.