Projectile Motion
Projectile motion is the vector sum of both horizontal motion and vertical
motion.
The shape of projectile motion looks like a parabola.
Horizontally:
The speed of an object is constant because there is no force to either speed it
up or slow it down. It travels equal distances in equal intervals of time.
distance horizontally = constant velocity X time
or d = v·t
Vertically:
The speed of an object is under the influence of gravity.
Gravity is equal to 9.8 m/s 2 which we round off to 10 m/s 2 .
This is cause the object to speed up by 10 m/s every second it is in the air.
The distance it travels increases every second it is in the air.
Distance vertically = ½ gravity X time squared
or d = ½ gt 2
If we use the rounded off value of “g” then d = 5 t 2 .
The time to fall vertically is the same, if it fall down vertically, or if it is shot
out at a constant speed.
If you know the height from which an object is dropped, you can calculate
the time to fall to the ground by using the formula: t =
2d
or t =
g
d
5
If a picture is drawn of it position with a constant horizontal speed and an
increasing vertical speed it would look like:
↓→
o
o
o
o
o
o
O
o
o
o
o
o
o
o
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Projectile Motion
Projectile motion is the vector ________ of both _______________motion
and ______________________motion.
The shape of projectile motion looks like a______________________.
Horizontally:
The speed of an object is _______________because there is no __________
to either ___________________________or_________________________.
It travels ________________distances in ______________intervals of time.
distance horizontally = ________________X _______________
or d = _____ · ______
Vertically:
The speed of an object is under the influence of______________.
Gravity is equal to ________ m/s 2 which we round off to _________ m/s 2 .
This is cause the object to _______________by _______ m/s every
____________ it is in the air.
The distance it travels _____________every ______________it is in the air.
Distance vertically = ½ _________X ____________squared
d = ½ ______ _____ 2
or
If we use the rounded off value of “g” then d = 5 t 2 .
The time to fall vertically is the____________, if it fall down vertically, or if
it is shot out at a constant speed.
If you know the ______________from which an object is dropped, you can
calculate the ___________ to fall to the ground by using the formula:
t=
2d
or t =
g
d
5
If a picture is drawn of it position with a ____________horizontal speed and
an _________________ vertical speed it would look like:
↓→
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o