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physics
section 1
motion
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Cards (9)
distance
is the
lenght between two points along a chosen path
SI unit: m,
symbol
: s
displacement
is the
disstance
covered in a
straight line
in a
specific direction
, measured in
metres
symbol: s, SI unit: m
speed
is the
distance covered per unit time
, measured in
metres per second
(
m/s
), symbol: s
velocity
is defined as
distance travel per unit time
, SI unit:
m/s
, symbol:
v
acceleration
is the change in
velocity
per unit time
uniform
acceleration-a moving body
velocity
or
speed increase
equally in
time interval
uniform deceleration-
when a body
velocity
or
speed
is
decreases
equally in
time interval
Gradient
=
speed
=
y2
-
y1/x2
-
x1
Acceleration
=
gradient
Distance
travelled
= area
under graph
=½ ×b × h /l ×w× h