Term 1 Week 9 2020

Homework:

• Ex 4E, p.115-117 Kinematics (earlier week)
• Ex 4F, p.119-124 Projectile Motion (earlier week)
• Ex 4A, p.90-94 Vectors (earlier week)
• Ex 4H, p.132-134, Circular Motion (earlier week)
• Ex 4B, p.97-104 Forces (earlier week)
• Ex 4F, p.143-147 Energy, Work, Power (earlier week)
• Ex 4I, p.137-141, Springs (earlier week)
• Ex 2B, p.16-18, Graphing(Complete these for the upcomming Lab Assessment)
• Ex 2C, p.19-25, Identifying Relationships and Experimental Equations(Complete these for the upcomming Lab Assessment)
• Ex 2B, p.23-40, Level 3 Handout booklet on Graphing Errors (Complete these for the upcomming Lab Assessment)
• Ex 4D, p.108-112, Momentum P = mv (this week)
• Ex 4C, p.105-107, Impulse ΔP = FΔt (this week)


Momentum



Conservation of Momentum
In the absence of external forces the total momentum of a system is always conserved



Impulse
The change in Momentum for a single object
ΔP = Pf - Pi
&
ΔP = FΔt
&
ΔP = mΔv
• The unis are eithor Ns or kgms-1 , this is the same unit and the one that is used depends on the context
• Impulse on one object is always equal and opposite to the impulse on the other onject - Newton's Third Law







Physics of Car Crashes (Impulse)


Impulse


Impulse


Impulse examples///Homemade Science with Bruce Yeany


Impulse


Momentum


What is Momentum?





Impulse