Bite-sized Motion in one Dimension Study Notes for IB Physics HL/SL
Kinematics – the study of motion. In order to study motion, we must first define some key quantities that describe motion in all its varieties.
In uniform motion the speed/velocity is constant. (by definition)
Suppose that at t = 0, s = initial position
and that at t = something, s = final position.
Then we have the following definition for velocity:
In uniformly accelerated motion the velocity is non-constant.
Acceleration is the rate of change of velocity.
Suppose we choose a time interval from t = 0 to some arbitrary time t later.
Let the velocity at time t = 0 (initial velocity) be u and the velocity at time t be v (final velocity). Then we get the following expression for acceleration:
Formula Booklet
In uniform motion the velocity is constant. In non-uniform motion the velocity is non-constant.
Frequently Asked Questions:
Defining Variables:
In most kinematics problems, you will be tasked with finding the value of one of these variables with the equations below.
Formula Booklet
Formula Booklet
Formula Booklet
Formula Booklet
As discussed in a previous notes section, acceleration occurs when a force is applied to an object. This includes the force of gravity that the earth exerts on any object in its gravitational field.
Projectile Motion is the motion of an object in ‘free’ air that is only subject to gravitational acceleration.
Not in Formula Booklet but important
The Kinematic Equations are the same – but used for each component (vertical/horizontal)
Fluid resistance force is the force a body experiences when traveling through a fluid.
Not in Formula Booklet but important
Fluid resistance equations
Suppose we drop a ball from some height.
Terminal speed formula
Questions and Answers
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