2D Particle Kinetics Newtons 2nd Law
Force
0 Interaction between a body and its environment; action of one body on another.
0 Force is a vector characterized by magnitude, direction, and the point of application.
0 Superposition of forces:
R:ZF:FI+FZ+F;+
1. A book is sitting on the very slick (frictionless) passenger seat ofa car. The car is moving at FN
a constant velocity. The driver suddenly hits his breaks. The book suddenly slides off the seat. T
Why?
6 (a) A force acted on the book in the forward di
NAME
PART A. (40%) Each question is worth 4%. In the space provided, to the left of the question
number, write the letter corresponding to the best answer to the question.
ibiAl) A 3 ,u C point charge ql is located a distance d away from a 6 y C point c
1. Which one of the following statements concenung the two "gravitational constants" G, the universal
gravitational constant, and g the magnitude of the acceleration due to gravity is true?
A) The value of g is the same everywhere in the universe but the
1). Youre pushing a cart to get it moving. The cart starts from rest (1) = 0), and for a while you push it
so that it moves to the right in a straight line with a steadily increasing speed: Every second, the speed
of the cart goes up by l km/hour. Assumin
General information andinstructions: On the blank Scantron sheet, (1) pros: and bubble in your
name where indicated in the upper right comer; then (2) do the same with your ID number
where indicated near the top left; then (3) bubble in your test version
This printout should have 21 questions.
Multiple-choice questions may continue on
the next column or page i nd all choices
before answering.
001 (part 1 of 2) 5.0 points
Object A has mass mA : 8 kg and initial
momentum
36A,.- : {20, *3, 0> kg ~ m/s,
just
Chapter 5 - Circular Motion; Gravitation
Vocabulary
Uniform Circular Motion An object that moves in a circle at constant speed v is said
to experience uniform circular motion.
Centripetal Acceleration 7 center-seeking acceleration
Radial Acceleration aR i
o Energy= capacity to do work
Cannot be created nor destroyed; can only transfer
Units = Wh. Whl1,000=1 kWh
Usage: 1. Liquid fuel (gasoline) 2. Heating
Overtime energy needs have increased: hunting and
gathering food -+ electricity
0 Work= force x distanc
1.Print your name, test form number and student number in the section of the answer card labeled
STUDENT IDENTIFICATION.
2.Bubble in your test form number in columns 1-3, skip column 4, and bubble in your student number
in columns 5-13.
3.For each questio