4. COMPETENCE
To Show the relationship between
the concept of impulse and
momentum to finish collision
problem
5. MOMENTUM
THE CONCEPT OF MOMENTUM
Momentum is defined as a measure of
the difficulty to dismiss a bend.
6. Momentum is the product of mass and
velocity vector of an object. Momentum
allows analysis of movement within the mass
and velocity vector of an object rather than
just using the force and acceleration.
Momentum is a vector that has the same
direction with velocity.
Momentum is formulated as follows.
P = m.v
P = momentum (kg m / s)
m = mass of the object (kg)
v = velocity (m / s)
7. The concept of impulse
impulse is the product of the magnitude of the force
vector F scalar interval∆t.
8. LAW OF CONSERVATION OF
MOMENTUM
The momentum of the particle system is the amount of momentum of each
9.
10.
11. Perfectly elastic collision
For a perfectly elastic collision, the relative speed shortly after the
collision is equal to minus the relative velocity just before collision
12. Elastic collision not at all
The bullet that moves along with the target
The bomb that exploded
Applicable: law of conservation of momentum
v
V
awal akhirx
M
awal
m1 m2
v1 v2
akhir
13.
14. The coeficient of restitution for the
collision of one dimensional
Negative coefficient of restitution is the
ratio between the relative velocity just after
collision with relative speed just before the
collision, for the one dimensional collision
Perfectly elastic collision
Elastic collision not at all
Partially elastic collision coeficient of restitution is 0<e <1
