1. Year 10 Pathway C Mr. D. Patterson
Classical Physics
Year 10 Pathway C
Mr. D. Patterson

2. Outcomes State Newton’s second law of motion
Apply Newton’s second law to simple situations
Use F=ma to solve for unknown values

3. May the force be with you
A force is a push or pull which may:
A) Change the shape of an object
B) Change the velocity of an object
Force
Force

4. Newton’s First Law - review
An object at rest.....
stays at rest
An object in motion....
stays at a constant velocity
Unless acted on by an unbalanced force.

5. Newton’s Second Law
The acceleration of an object is proportional to the unbalanced force acting on that object and inversely proportional to the mass

6. Newton’s Second Law
The acceleration of an object is proportional to the unbalanced force acting on that object and inversely proportional to the mass
The acceleration of an object is proportional to the unbalanced force
Large Force = Large Acceleration

7. Newton’s Second Law
The acceleration of an object is proportional to the unbalanced force
Small Force = Small Acceleration

8. Newton’s Second Law
The acceleration of an object is proportional to the unbalanced force acting on that object and inversely proportional to the mass
The acceleration of an object is
inversely proportional to the mass
Large Mass = Small Acceleration
Small Mass = Large Acceleration

9. In mathematical terms.. Newton’s second law as a formula:
F is force (N)
m is mass (kg)
a is acceleration (ms-2 )

10. Make a magic triangle if it helps
Example Problem
Make a magic triangle if it helps
What force is required to push a 1000 kg car with an acceleration of 1.5 ms-2?
What acceleration can be achieved by pulling a 20 kg cart with a force of 45 N?

11. Outcomes State Newton’s second law of motion
Apply Newton’s second law to simple situations
Use F=ma to solve for unknown values
Matthew and Winters Sets 15 and 16