Chapter 3, Vectors and Two-Dimensional Motion
3.1 Vectors and Their Properties 1. Which type of quantity is characterized by both magnitude and direction? a. scalar b. vector c. trigonometric d. algebraic variable 2. Which of the following
Answers to Even Numbered Conceptual Questions
2. 4. Atomic clocks are based on the electromagnetic waves that atoms emit. Also, pulsars are highly regular astronomical clocks. (a) (b) (c) 6.
~ 0.5 lb 0.25 kg or ~10 -1 kg ~ 4
Review Midterm 2: you will need to bring a SCANTRON Form No 815-E (the
small one in green with 15 questions)
There will be approximately a total of 15 multiple choice conceptual questions and multiple
choice problem questions.
Besides the multiple choice
Problem: 2400-kg satellite is in a circular orbit around a planet.
The satellite travels with a constant speed of 6670 m/s. The
radius of the circular orbit is 8.92 106 m.
1. What is the acceleration of the satellite? Answer: 4.98 m/s2
Short Solving Problems
1. An object moves 20 m east in 30 s and then returns to its starting point taking an
additional 50 s. If west is chosen as the positive direction, what is the average speed
of the object?
2. A lion can run at approximately 100 km/h
Chapter 2, Motion in One Dimension
2.1 Displacement 1. A change in a physical quantity w having initial value wi and final value wf is given by which of the following? a. wi wf b. wf wi c. (wf + wi)/2 d. none of the above 2. Displacement
Chapter 1, Introduction
1.1 Standards of Length, Mass, and Time 1. Since 1983 the standard meter has been defined in terms of which of the following? a. specific alloy bar housed at Sevres, France b. wavelength of light emitted by krypton-