Forces & Newton's Laws
Forces & Newton’s 1st law Objectives:
N1.1 Draw a properly labeled free body diagram showing all forces acting on an object including magnitude and direction
N1.2 Tell whether the forces are balanced or unbalanced for an object based on its motion
N1.3 Calculate net force for different situations
N1.4 Use Newton’s 1st law to quantitatively determine the forces acting on an object moving at a constant velocity
N1.5 Recognize/apply Newton’s 1st law to different situations and relate it to the terms equilibrium and inertia
N1.6 Identify and apply standard contact forces to a free body diagram: weight, normal, friction, applied, tension, buoyancy, applied
Uniform Acceleration Objectives:
UA.1 know the difference between acceleration and velocity
UA.2 describe the motion of an object given its acceleration
UA.3 calculate the acceleration of an object with direction and proper units
UA.4 interpret the meaning of the sign of the acceleration
UA.5 identify/draw related plots of motion maps, position, velocity and acceleration vs time graphs for uniform acceleration
UA.6 identify the meaning of the slope and y-intercept for a velocity vs time graph
UA.7 use the acceleration of gravity as 9.8 m/s2 to solve freefall problems
Newton’s 2nd & 3rd law Objectives:
N2.1 explain the relationships between acceleration, force and mass
N2.2 identify when the forces must be unbalanced for an object based on its motion
N2.3 use Newton’s 2nd law to determine the forces acting on an object moving at a constant acceleration
N2.4 draw a force diagram for an object experiencing a net force not equal to zero
N2.5 make calculations for acceleration based on a force diagram
N2.6 apply Newton’s 2nd law wording to different situations
N2.7 describe forces on an object falling in freefall and with air resistance
N2.8 distinguish between weight and mass
N2.9 identify Newton’s 2nd law situations and use it to solve problems
N2.10 identify Newton’s 3rd law situations and the action-reaction force pairs involved
Concepts the test will be checking to see if you understand:
Graphs for all types of motion: Position vs time, velocity vs time, and acceleration vs time
Forces: types, balanced vs unbalances, net force, equilibrium, free-body diagrams
Ist law: use law to explain situations
Acceleration: what is it conceptually, find acceleration from v vs t graph or free-body diagrams (2nd law)
Gravity: mass vs weight, free-fall and falling with air resistance
3rd law: use law to explain situations
Extra practice:
Concept builders:
balanced & unbalanced forces match that free body diagram
force & motion which one doesn't belong
Newton's 2nd law Name the motion
So many great questions in this packet