Velocity Notes
Velocity
 ________________________________
Displacement
 ____________________________
m E, cm up
s
min
d
v
Velocity =
cm S, m N,
km downstream
Displacement
Time
s, min, hr
t
d
d
vs
v =
d=v•t
t =
t
tt
d
v
 Make sure to add _____________________ to the end
of the displacements & velocities
Ex: v = ?
d = 10 km S
t = 5 hr
Ex: v = 5 m/s up
d = 100 m up
t=?
d
10 km S
km
v = --------- = --------- = 2 ------ S
t
5 hr
hr
t=
d
100 m up
---------- = ------------ = 20 s
v
5 m/s up
Ex: v = 25 km/s N
km
d=?
d = v • t = 25 ---- N • 4 s = 100 km N
t=4s
s
Combing
Velocities
 A bird is flying with a velocity of 20 km/hr S. The bird has a
wind at its back blowing with a velocity of 20 km/hr S. What is
How do you
combine
velocities in
the same
direction?
the combined velocity of the bird with the wind?
Ex: Velocity of Wind
= 20 km/hr S
+
Velocity of Bird
= 20 km/hr S
Bird Moves
= 40 km/hr S
 Velocities in the _________________ combine by __________
How do you
combine
velocities in
opposite
directions?
*Always
move in
direction of
greatest
velocity
 A plane is flying with a velocity of 30 km/hr N. The plane is
flying into a wind blowing with a velocity of 20 km/hr S. What
is the combined velocity of the plane with the wind?
Ex: Velocity of Plane
= 30 km/hr N
–
Velocity of Wind
= 20 km/hr S
Plane Moves
= 10 km/hr N
 Velocities in _________________ combine by _____________
Summary: