PHY 204 General Physics
Solutions to Homework 4
(Chapter 5: Using Newtons Laws)
Problem 1
(a) The coefficient of kinetic friction k is always smaller than the coefficient of static friction s .
What would happen if this were not the case, and the coeffici
PHY 204 General Physics
Homework 1
(Chapter 2)
Due Wednesday, September 7, at the start of lab. If you are unable to attend class, you
must let me know and turn in your assignment prior to due date/time. Please carefully read the
document titled Homework
PHY204 General Physics Fall 2016
Solutions to Exam 1
Problem 1
(4 pts)
Solution. (a) Positive (because v(t = 0) has a positive value).
(b) Negative (because v(t) has a negative value at point 4).
(c) 3 and 5 (because the sign of v changes at those points)
PHY 204 General Physics
In-Class Practice Problems Chapter 3
Problem 1
Find the magnitude of the vector 34i + 13j and determine its angle to the x axis.
Problem 2
~ has magnitude 11 and points straight down. Vector T~ has magnitude 35 and points at
Vector
Take the positive x direction to point to the right. Between
times t = 0 and t, a car moving along the x axis has average
velocity vavg = 12 m/s. In this period, it has:
1. Moved to the left
2. Moved to the right
3. Not enough information to answer
Take t
Can the sum of magnitudes of two vectors ever be equal to the
magnitude of the sum of the same two vectors?
1. Yes.
2. No.
Can the sum of magnitudes of two vectors ever be equal to the
magnitude of the sum of the same two vectors?
1. Yes.
2. No.
3
Suppose