lecture14_post - Announcements Exam 1 is being graded....

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Exam 1 is being graded. Solutions will be available before end of today. Hope to post grades on e-learning by Friday. You will get back your exam on March 2 nd . If you forgot to bring ID during exam, you must see Prof. Chan with your ID or your exam will not be graded. Announcements
Background image of page 1

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

View Full DocumentRight Arrow Icon
Momentum of an object
Background image of page 2
Momentum () fi net mv v tt == ∆∆ p F r r alternative statement of Newton’s second law The time rate of change of momentum of an object is equal to the net force acting on it p t
Background image of page 3

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

View Full DocumentRight Arrow Icon
Impulse ± When a single, constant force F acts on the object for time t, there is an impulse delivered to the object: t F I = r r I r t F v v m p I i f = = = r r r r r ) ( F t = area under F-t curve Using t p F = r r Impulse
Background image of page 4
Average Force in Impulse ± Definition: The average force = the constant force that would give the same impulse to the object in the time interval as the actual time-varying force gives in the interval t F p I av = = r r r
Background image of page 5

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

View Full DocumentRight Arrow Icon
20. A pitcher throws a 0.15-kg baseball so that it
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

lecture14_post - Announcements Exam 1 is being graded....

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online