relative velocity Flashcards
1
Q
->
Vtl=
A
-> ->
Vt-Vl
2
Q
finding shortest distance
A
distance as adjacent
shortest distance opposite
path of whatever relative to whatever as hypotenuse
3
Q
finding how long they will be within a certain distance
A
draw circle
right angled triangles
pythagoras
time taken= distance divided by speed
4
Q
at weird angles
A
find relative velocity as per
wait for one to be in line with the other
continue as normal with new adjacent
5
Q
rivers
A
river flowing is opposite
velocity of boat is hypotenuse
relative velocity is adjacent
6
Q
winds
A
velocity of the wind is the same
velocity of the plane relative ti the wind is the u and the angle
find velocity of the plane
if wlong x axis then j component must be zero
7
Q
apparent velocity is the same as
A
the relative
