Pages in this set

Page 1

Preview of page 1
Linear motion
Linear motion is motion in a
straight line. It can involve zero or
constant positive or negative values
of acceleration and may include a
reversal in the direction of travel.

Page 2

Preview of page 2
Linear motion
Although linear, the motion does
not have to be horizontal. It could
be vertical, with the object moving
up and/or down.

Page 3

Preview of page 3
Linear motion
In fact, if you think about it, many
equations in mechanics represents
properties acting in straight lines: F
= ma, F and a are colinear vectors
KE = 1/2mv2, This is linear kinetic
energy (as opposed to rotational
kinetic energy)

Page 4

Preview of page 4
Linear motion
We're going to look at four more
equations. These are the equations
of uniformly accelerated motion;
also known as the s.u.v.a.t.
equations because of the symbols
they use.

Page 5

Preview of page 5
Linear motion
Learn how to derive these equations
using the method shown here AND
practice re-arranging and applying
them. They are an examiner's
favourite.

Page 6

Preview of page 6
Graph connection
An object, already moving with an initial
velocity, u accelerates, increasing its
velocity to v in a time t.
v
u
t

Page 7

Preview of page 7
The symbols
s ­ distance or
displacement, m u ­ initial velocity,
ms-1 v ­ final velocity, ms-1 a ­
acceleration, ms-2 t ­ time taken, s

Page 8

Preview of page 8
Graph gradient
Like any graph, the gradient is (the
change in y)/ (the change in x).
Gradient = (v-u)/t
v
u
t

Page 9

Preview of page 9
Gradient = a
But the gradient of a velocity-time
graph is acceleration.
So gradient = (v-u)/t becomes a =
(v-u)/t

Page 10

Preview of page 10
Rearranging
a = (v-u)/t becomes at = v - u u + at
= v or v = u +at

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »

Pages in this set

Page 1

Preview of page 1
Linear motion
Linear motion is motion in a
straight line. It can involve zero or
constant positive or negative values
of acceleration and may include a
reversal in the direction of travel.

Page 2

Preview of page 2
Linear motion
Although linear, the motion does
not have to be horizontal. It could
be vertical, with the object moving
up and/or down.

Page 3

Preview of page 3
Linear motion
In fact, if you think about it, many
equations in mechanics represents
properties acting in straight lines: F
= ma, F and a are colinear vectors
KE = 1/2mv2, This is linear kinetic
energy (as opposed to rotational
kinetic energy)

Page 4

Preview of page 4
Linear motion
We're going to look at four more
equations. These are the equations
of uniformly accelerated motion;
also known as the s.u.v.a.t.
equations because of the symbols
they use.

Page 5

Preview of page 5
Linear motion
Learn how to derive these equations
using the method shown here AND
practice re-arranging and applying
them. They are an examiner's
favourite.

Page 6

Preview of page 6
Graph connection
An object, already moving with an initial
velocity, u accelerates, increasing its
velocity to v in a time t.
v
u
t

Page 7

Preview of page 7
The symbols
s ­ distance or
displacement, m u ­ initial velocity,
ms-1 v ­ final velocity, ms-1 a ­
acceleration, ms-2 t ­ time taken, s

Page 8

Preview of page 8
Graph gradient
Like any graph, the gradient is (the
change in y)/ (the change in x).
Gradient = (v-u)/t
v
u
t

Page 9

Preview of page 9
Gradient = a
But the gradient of a velocity-time
graph is acceleration.
So gradient = (v-u)/t becomes a =
(v-u)/t

Page 10

Preview of page 10
Rearranging
a = (v-u)/t becomes at = v - u u + at
= v or v = u +at

Comments

No comments have yet been made