Year 5 test 2 Flashcards
1
Q
buoyancy
A
pVg (density x volume displaced x 9.8)
2
Q
friction
A
Mu (N) (coefficient of friction x normal force)
3
Q
viscosity
A
6piviscosityradiusvelocity
4
Q
impulse
A
F x t
5
Q
centripetal force
A
mv^2/r
5
Q
change in momentum
A
change in mass * v / t OR change in velocity * mass / t
5
Q
angular velocity
A
w = v/r
6
Q
centripetal acceleration
A
rw^2 (f=ma=mrw^2 = mv^2/r)
7
Q
angular acceleration
A
a/r or change in w/t
