PHYSICS 202
General Physics II
Instructor: Prof. Nadine Gergel-Hackett
Office: Pearce 417
Office phone: 540-887-7302
Office Hours: TBD
Email: [email protected]
Web pages : Please regularly check and a
Two dimensions. In Figure 13-34, three point particles are fixed in place in an xy plane.
Particle A has mass mA = 6 g, particle B has mass 2.00mA, and particle C has mass
3.00mA. A fourth particle D,
v
m
p
p = mv
Linear Momentum :
!
!
Linear momentum p of a particle of mass m and velocity v
!
!
is defined as p = mv.
The SI unit for linear momentum is the kg.m/s.
Below we will prove the following s
Chapter 7
Kinetic Energy and Work
! Kinetic energy of a moving object
! Work done by a force
! Work-Kinetic Energy Theorem
! Power
Kinetic Energy: A new physical parameter to describe the state of mot
Static friction followed by kinetic friction
Applied force
Before the box slides, static friction acts. But once it starts to slide,
kinetic friction acts.
time
Some approximate coefficients of frict
Work done by a spring
Figure below shows how a spring does work on a block as it is
stretched and compressed.
Elastic potential energy
A body is elastic if it returns
to its original shape after
bei
Momentum and
Its Conservation
SECTION 1 Impulse
and Momentum
Objectives
Explain what is meant by momentum recognizing that it is a vector
quantity.
Compare the momentum of different moving objects,
G11 Core
T3 Week 1
Impulse-Momentum Theorem
Write the letter of the correct answer in the space provided.
1. Which conditions will result in the smallest change in momentum?
a. a large force over a lo
Lexus sold the most luxury autos in the U.S. for a second straight month in
March, closing in on Mercedes-Benzs first-quarter lead, even as sales
slipped 2.8 percent, weighed down by a 14 percent drop
In a longitudinal wave, the compressions and rarefactions travel in
a. the same direction that the wave travels.
b. a direction opposite to the wave travel.
c. neither.
Answer.A