1. Newton's 2nd law of motion
A. The net force on an object
is equal to the product of its acceleration and its mass.
B. formula
Force = mass
x acceleration
C. Units
1. acceleration
= m/s2
2. mass
= kg
3. force
= 1 N
a. N = kg x m/s2
D. Newtons
1. named
after Sir Issac Newton
2. Another way to write the formula
A. acceleration = force/mass
B. mass = force x accleration
Summary
Left side
practice problems pg. 45
1. Newton's 3rd law of motion
A. If one object exerts a force
on another object, then the second object exerts a force of equal strength
in teh opposite direction on the first object.
B. example fig. 15, pg. 56
explain
C. example fig. 17, pg 57
explain
2. Momentum
A. Formula
momentum =
mass x velocity
B. conservation of momentum
1. The
total momentum of the objects that interact does not change.
2. The
total momentum of objects remains teh same unless outside forces act on
the objects.
Summary
Left side
practice problems pg. 59