Peer Evaluation for Position/Response Essay
Instructions: Read through your peer's essay once to get a general overview of his/her position/response
essay; then, read through it again more carefully, answering the following quest
Homework #1 Solutions, Sections A and B
Section A- Basic Economic Concepts
1) (TURN-IN) The Implicit cost of taking time to raise children has gone up in recent decades (due to
increased value of womens time). Therefore, children have become
1. A consumer has a weekly food and clothing budget of $54. Food sells for $4 a unit and clothing for $50 a unit.
Quantity of food
Quantity of clothing
a) Use the consumer's
1. Suppose your university decided to lower the cost of parking on campus by reducing the
price of a parking permit from AED 300 per semester to AED 45 per semester.
a. Thinking in terms of opportunity cost, would the lower price of a parking per
Suppose we have the following market supply and demand schedule for bicycles:
P = 800 10Qd
P = 10Qs - 200
1. What is the equilibrium price and quantity of bicycles?
2. If the government sets a price ceiling at $400, is there a surplus or shortage
G 0 AL Apply kinematics to horizontal motion with two phases.
PROBLEM A typical jetlinerlands ataspeed of 1.60 X 102 mi/ h
and decelerates at the rate of (10.0 mi/h)/s. If the plane travels
at a constant speed of 1.60 X 102 mi/ h for 1.00 s after land
Answers: a) 2.20 m/s2, b) 5.45 s, c) -504 N
Answer: a = 0.476 m/s2, = (360 7.46)= 352
The Gravitational force:
Answers (a) 0.415 40 N (b) 0.415 33 N (c) 1 10-6 m/s2
Q) Two forces are applied to a car in an effort to
move it, as shown in Figure P4.12. (a) What is the
resultant of these two forces?
1. You can prepare a table like we did in the
2. Find the angle with respect to
Q1) A girl is pulling a 300 N box with a force of 100 N across a level surface with constant velocity. The
force makes an angle of 30 above the horizontal. What is the normal force of the floor on the box?
a. 300 N
b. 86 N
c. 213 N
d. 250 N
Q2) A 100-kg b
Projectile at an angle:
Q) A projectile is fired from ground level with an initial speed of 42.5 m/s at an angle of
40.0 above the horizontal. Neglect air resistance, take upward as the positive direction,
and use g = 9.8 m/s2.
(a) Determine the time nece
1. The magnitude of vector A is 20.0 and points in the
direction 195ccw. Draw the vector and Calculate the
x and y components of this vector.(Ans:- 19.3, - 5.18)
2. A person walks 25.0 north of east for 4.0 km, How
far due east and due north would she hav
Newtons Laws Applications
1. Which of Newton's laws best explains why motorists should buckle-up?
A) the first law
B) the second law
C) the third law
D) the law of gravitation
2. An object sits on a frictionless surface. A 16-N force is applied to the obj
Practice # 1- Chapter 3
Instructor: Asad Hasan
Given the vectors
j and B 3.00
j, (a) draw
the vector sum C = A + B and the vector difference D = A B. (b)
Calculate C and D, first in terms of unit vectors and then
1. A sports car of mass 1000 kg can accelerate from rest to 27 m/s in 7.0
s. What is the average forward force on the car?
A) 2.6 102 N
B) 3.9 103 N
C) 2. 104 N
D) 1.9 105 N
2. Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0
HW Problems (Chapter 7)
Problem 9: By the work-kinetic energy theorem,
1 2 1 2 1
mv f mvi (2.0 kg) (6.0 m/s)2 (4.0 m/s) 2 20 J.
We note that the directions of v f and vi play no role in the calculation.
Problem 19. Equation 7-15 applies, but th
HW Problems (Chapter 2)
1) A velocity-time graph for an object moving along the x axis is
shown in Figure P2.14. (a) Plot a graph of the acceleration
versus time. (b) Determine the average acceleration of the
object in the time intervals t = 5.00 s to t =