1. Newton’s First Law! An object at rest remains at rest, and an object in motion continues in motion with constant velocity unless the object experiences a net external force Aka – Objects are LAZY

2. Inertia  The tendency of an object to resist motion  Depends on an object’s mass  The scientific term for Laziness!!

3. Newton’s Second Law  Fnet = m * a F = Net Force (N) m = mass (kg) a = acceleration (m/s 2 )  The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the object’s mass

4. Net Force  Sum of all the forces acting on an object  If Fnet = 0 –Forces are balanced –No acceleration

5. Roberto and Laura are studying across from each other at a wide table. Laura slides a 2.2 kg book toward Roberto. If the net force acting on the book is 1.6 N to the right, what is the book’s acceleration?

6. Objects on an Inclined Plane W FNFN θ

7. W FNFN θ θ

8. W FNFN θ 1.W = mg 2.F N = Wcos(θ) 3.Fa = Wsin(θ) 4.Fa = Fnet = m *a θ