Review Sheet _5

# Review Sheet _5 - Rev 1 REVIEW SHEET#5 Impulse Linear...

This preview shows pages 1–2. Sign up to view the full content.

Rev. 1 REVIEW SHEET #5: Impulse, Linear Momentum, Conservation of Linear Momentum; Center of Mass Definitions: In many situations the net force on an object is not constant and acts only during a short time interval. Examples are a ball bouncing off a wall or a baseball bat hitting a ball. For such situations it is useful to define the impulse that the net force ext F r imparts on the body during the time interval from t 1 to t 2 : 2 1 t ext t J F dt = r r (impulse is a vector) Making the simplifying assumption that the net force is constant and setting 2 1 t t t - = ∆ the expression for the impulse becomes ( 29 ext J F t = ⋅∆ r r An object of mass m and velocity v r is defined to have linear momentum p mv = r r (linear momentum is a vector) The Impulse-Linear Momentum Theorem - The change in the linear momentum of an object during a time interval equals the impulse of the net force that acts on the object during that time interval: 2 1 J p p p = ∆ = - r r r r

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 / 2

Review Sheet _5 - Rev 1 REVIEW SHEET#5 Impulse Linear...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online