Download Study Notes for Test 2

PHYS 111-6
Notes for Test 2
Chapter 3 Kinematics in Two Dimensions
Concept Summary is on p. 79.
You should know the definitions of velocity and acceleration in two dimensions.
You should know how use the four equations of kinematics introduced in Chapter 2 to solve kinematics
problems in two dimensions. (These equations will be given on the test but you should know the meanings of
the symbols and how to use them.)
You should know how to solve problems involving projectiles and projectile motion.
Chapter 4 Forces and Newton’s Laws of Motion
Concept Summary is on p. 123.
You should be familiar with the concepts of force and mass. In particular, you should know the distinction
between mass and weight.
You should know that force is a vector and mass is a scalar.
You should be able to state all three laws of motion. (You may paraphrase these, if you wish, but what you say
must be correct.) (You could also consult a different physics text to see how the laws of motion are worded.)
You should know what is meant by the law of inertia and an inertial frame of reference.
You should know the units associated with Newton’s second law, F  ma (see Table 4.1).
You should know to use Newton’s second law of motion to find any one of its three variables ( F , m or a )
given the other two.
You should know how to use Newton’s second law of motion in two dimensions by using components (see
Example 3 on p. 93 of your text and your lecture notes).
You should be familiar with Newton’s third law of motion and how to identify an action-reaction pair of forces.
You should know how to calculate the accelerations produced by action and reaction forces. (See Example 4 on
p. 94 of your text.)
You should be familiar with the law of gravity (Equation 4.3) and how to use it find the force of gravitational
attraction between objects. You should be able to identify the constant G in the law of gravity as the universal
gravitational constant and be able to distinguish it from g, the acceleration due to gravity. (Note: the law of
gravity and the value of G will be given on the test paper.)
You should know how to use the law of gravity to find acceleration due to the gravity g produced by a planet, a
star or other objects.
You should know how to use the equation w  mg to find the weight w of a mass m at a location where the
acceleration due to gravity is g.