Unit 2 - Forces
Inertia
Inertia
You should be able to:
- Define inertial mass as resistance of an object to acceleration and solely depends on mass
- Objects require external forces to change their current state of motion
Resources on Inertia:
Newton's Second Law: F = ma
Newton's Second Law: F = ma
You should be able to:
- Understand that force has a proportional relationship with mass and acceleration
- Understand that mass and acceleration have an inverse relationship
- Understand that the force acting on an object is in the direction of the acceleration
- Find the net force acting on an object, multiplying the net mass by the net acceleration
- Know that force can be seen in vector components (x and y)
Video Resources for Newton's Second Law
Sample problems from Pearson Physics:
Page 180, problems 46, 53-57, 61, 87, 105
Newton's Third Law
Newton's Third Law
You should be able to:
- Show that for every force acting on an object, there is a force acting on a different object
- Show that action and reaction forces are equal in magnitude and opposite in direction
Video Resources for Newton's Third Law:
Sample problems from Pearson Physics:
Page 159, problems 7, 15, 18
Page 180, problems 56, 57, 60, 62, 63
Hooke's Law: Force from a Spring
Hooke's Law: Force from a Spring
You should be able to:
- Apply the equation of force of a spring
- Show a conceptual understanding of spring constants
Video Resources for Hooke's Law:
Friction
Friction