Summary of Kinematics and vertical projectile motion

KINEMATICS AND VERICAL
PROJECTILE MOTION
Physics IEB

, Kinematics and vertical projectile motion Summary GR 10 – 12 IEB


Kinematics:
Formulae:
𝑠
• v=
𝑡
𝑣
• a=
𝑡

• v = u + at
• s = ut +1⁄2 a𝑡 2
• 𝑣 2 = 𝑢2 + 2𝑎𝑠
(𝑣+𝑢)
• S= 𝑡
2

Symbol Meaning Unit of measurement
V Final velocity 𝑚. 𝑠 −1
U Initial velocity 𝑚. 𝑠 −1
S Displacement m
t Time s
a Acceleration 𝑚. 𝑠 −2


Terms you may need to be familiar with:
Term Definition How to calculate
The velocity over a Find the velocity at two points of the period, add them
Average
certain period that is together and then divide by two
velocity
averaged out
If you have displacement and time, you can use the formula
The velocity at that exact v=s/t.
Instantaneous
moment of the moving If you don’t have displacement, you need to find the
velocity
object gradient of the displacement vs time graph at the exact time
given.


IT is important to note the difference between speed and velocity, Velocity is the final position minus
the initial position over time, whereas speed is the total distance travelled over time.

If a car travelled the path on the left, the
speed will be calculated using the entire
distance of the path, whereas the velocity
A
will be calculated using the distance
B between A and B.


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