{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture15

# Lecture15 - Where would prefer to be at the moment of...

This preview shows pages 1–6. Sign up to view the full content.

Where would prefer to be at the moment of collision? Newton 2 nd Newton 3 rd law Need another way to express Newton’s law! How can we describe this explosion?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Linear Momentum Newton 2 nd Newton 3 rd law Linear Momentum Conservation Linear Momentum How to define momentum? F = ma = m dv/dt m dv = F dt v 1 v 2 t 1 t 2 F = m dv/dt F dt = m dv m v 2 – m v 1 = t 1 t 2 F dt Definition: LINEAR MOMENTUM p = mv
p = mv p x = mv x In terms of components p y = mv y p z = mv z The linear momentum of a particle of mass m and velocity v is a vector Magnitude Direction (always // v) [p] = [Kg m/s] Units The concept of momentum provides a quantitative distinction between heavy and light objects p truck = Mv truck p car = mv car If v truck =v car p truck >> p car

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
The rate of change of momentum of a body is equal to the net force acting on it Newton 2 nd law in terms of momentum p = mv taking the derivative of both sides d t d p = m d t d v = F net F net = F i = d t d p a
Newton 2 nd law in two forms: More general form. Why?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 14

Lecture15 - Where would prefer to be at the moment of...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online