Question

3 Force

3.1 Equations

•Second law: ΣF=ma

•Weight:W=mg•Normal: N perpendicular to surface of contact

•friction:f=μN

3.2 Skills

•Know how set up force diagram and identify the forces acting on an object

.•Understand that net force is what causes acceleration(not velocity!)•Find the value of a particular force, knowing what the other forces and acceleration on the object are.

Answer 1

Comment different quantities, different forces, the net force, newton's law of motion on terms of forces, and the way to find the acceleration is given