1
Q
volume
A
1L = 1dm^3
2
Q
kinetic energy
A
KE = 1/2 mv^2
3
Q
equation of kinematics without s
A
v= u + at
4
Q
eqn of motion w/o ‘a’
A
s= t. v+u/2
5
Q
eqn of motion w/o ‘v’
A
s= ut + 1/2 at^2
6
Q
eqn of motion w/o t
A
v^2 = u^2 + 2as
or v^2 - u^2 = 2as
7
Q
newtons 2nd law
A
f=ma
f=mg
8
Q
specific gravity /relative density
A
RD= density of substance / density of water
density of water : 1000 , density = m/v
9
Q
work
A
f.s
10
Q
gravitational potential energy
A
Ug = mgh
umax= ke max
11
Q
conservation of momentum
A
p1+p2 + p1’+p2’
11
Q
momentum
A
p = mv
11
Q
impulse
A
FΔt= mΔv
FΔt =impulse , mΔv= change in momentum
12
Q
elastic collision
A
- KE1 + KE2 = KE1’+ KE2’
- v1 + v1’= v2 + v2’
no change in ke
13
Q
inelastic collision
A
KE1 + KE2 not equal to ke1’+ ke2’
change in ke
14
Q
A
15
Q
A
