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, with mass 4.00mA, is to be placed near the other three
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 statement: The time rate of change of the
Kinetic Energy and Work
! Kinetic energy of a moving object
! Work done by a force
! Work-Kinetic Energy Theorem
Kinetic Energy: A new physical parameter to describe the state of motion of
an object with mass m and SPEED v.
Static friction followed by kinetic friction
Before the box slides, static friction acts. But once it starts to slide,
kinetic friction acts.
Some approximate coefficients of friction
k is smaller or equal to s
Friction in horizontal m
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
Elastic potential energy is
the energy st
SECTION 1 Impulse
Explain what is meant by momentum recognizing that it is a vector
Compare the momentum of different moving objects, and same
object moving with different velocities
T3 Week 1
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 long time period
b. a large force over a short time perio
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 deliveries of
cars. But SUV sales rose 14 percent -