This lesson will introduce you to equations of motion called
kinematic equation This lesson will introduce you to equations of
motion called kinematic equation You will be able to use these
equations to solve kinematic related questions You will be able to
use these equations to solve kinematic related questions SPH 3U
Grade 11 U Physics By the end of this lesson, you will be able to:
What are we going to cover today? Look back at v-t graphs SPH 3U
Grade 11 U Physics The five equations Sample problems Homework SPH
3U Grade 11 U Physics Recall : Slope of a d-t graph is v Slope of a
v-t graph is a Slope of a v-t graph is a Area under a v-t graph is
d Area under a v-t graph is d Area under a a-t graph is v Area
under a a-t graph is v time (s) velocity (m/s [U]) vfvf vivi titi
tftf SPH 3U Grade 11 U Physics Slope = a area = d What would we
need in order to graph the acceleration of a car? Motion Detector +
computer with specialized software slow- motion camera Some kind of
scale / reference for distance Timer 3s Five Key Uniform
Acceleration Equations As shown in the previous lessons, graphical
analysis is an important tool physicists to use to solve problems.
However, sometimes we have enough information to solve problems
algebraically. Algebraic methods tend to be quicker and more
convenient than graphical analysis. When solving uniform
acceleration problems, choose which equations to use based on the
given and required variables of the problem. B = base (run) = t h =
height (rise) = v l = length (run) = t h = height (rise) = v i
Y=intercept Like Terms Get rid of the brackets Via multiplication =
SP #1-3 p.38-39 It is important to note that these five equations
are used only when an object undergoes acceleration, a change in
velocity. If an object is travelling at a constant velocity, we
simply use the equation for constant velocity from section 1.2.
REMEMBER: there is only 5 possible variables in any of these
problems. Displacement, time, initial velocity, final velocity,
& average acceleration Problems in this course can only contain
4 of the possible 5 variables. Each of the 5 equations is therefore
missing a different variable this ensures that no matter what
variable is missing, we have a formula we can use to solve the
problem. This also means we can figure out what formula we need to
use by looking at our givens OR determining which of the 5
variables listed above we DONT HAVE SPH 3U Grade 11 U Physics Ex 1:
A runner jogging west at 5.0 m/s accelerates to 12 m/s while
covering 150 m. What is the acceleration of the runner? v i = 5.0
m/s Soln: Given: v f = 12 m/s d = 150 m Required: a Analysis:. Look
for equation with all of these variables. SPH 3U Grade 11 U Physics
2010 The acceleration is.40 m/s 2 [W] 1.5 Homework Practice # 1,2
p.39 Questions #1-6 p.39
