Week 2 Term 2 2023

 Homework

• Act 8B Graphs of motion p.101
• Act 8C Kinematics p.102
• Ex 4E Kinematics p.115-117
• Act 12B Projectile Motion p.140-141
• Ex 4F Projectile Motion p.119-124
• Act 9A Vectors p.108-109
• Ex 4A Vectors p. 90-94
• Act 10A Forces p.117-118
• Act 10B Forces p.123-124
• Ex 4B Forces p.97-104
• Act 13A p.148-149 Circular Motion
• Ex 4H p.132-134 Circular Motion
• Ex 2B, p.16-18, Graphing
• Ex 2C, p.19-25, Identifying Relationships and Experimental Equations
• Ex 2B, p.23-40, Level 3 Handout booklet on Graphing Errors
• Act 14B, p. 158-160 Combined Mechanics
• Ex 4J, p. 143-147 Energy, Work, Power
• Act 11A, p.130, Momentum and Impulse
• Act 11B, p. 133-134, Collisions
• Ex 4D, p.108-112, Momentum P = mv
• Ex 4C, p.105-107, Impulse ΔP = FΔt

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

Momentum

Impulse