Question 1

A swimmer swims 20 laps in a north-south facing pool in 7.00 minutes. Her first lap is toward the north. Her displacement and average velocity are

Accepted Answer

A) 0; 0. 
B) 0; 2.38 m/s, south. 
C) 0; 2.38 m/s, north. 
D) 1 000 m, south; 2.38 m/s, south. 
E) 1 000 m, north; 2.38 m/s, north. 
A) 0; 0. 
B) 0; 2.38 m/s, south. 
C) 0; 2.38 m/s, north. 
D) 1 000 m, south; 2.38 m/s, south. 
E) 1 000 m, north; 2.38 m/s, north.

Question 2

A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the bullet's acceleration as it passes through the board?

Accepted Answer

A) −500 km/s2 
B) −550 km/s2 
C) −360 km/s2 
D) −520 km/s2 
E) −275 km/s2 
A) −500 km/s2 
B) −550 km/s2 
C) −360 km/s2 
D) −520 km/s2 
E) −275 km/s2

Question 3

A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.00 minutes. The tortoise wins by a shell (20.0 cm). What was the length of the race?

Accepted Answer

The answer of A speedy tortoise can run with a...

Question 4

A problem may be solved more easily when alternative representations are used. The best strategy is to formulate representations in an order that assists in understanding the physical principles involved. Of the orders given below, the one that will work best most often is

Accepted Answer

A) pictorial representation, mathematical representation, tabular representation, mental representation. 
B) pictorial representation, mental representation, mathematical representation, tabular representation. 
C) mathematical representation, pictorial representation, tabular representation, mental representation. 
D) mathematical representation, tabular representation, mental representation, pictorial representation. 
E) mental representation, pictorial representation, tabular representation, mathematical representation. 
A) pictorial representation, mathematical representation, tabular representation, mental representation. 
B) pictorial representation, mental representation, mathematical representation, tabular representation. 
C) mathematical representation, pictorial representation, tabular representation, mental representation. 
D) mathematical representation, tabular representation, mental representation, pictorial representation. 
E) mental representation, pictorial representation, tabular representation, mathematical representation.

Question 5

The position of an object at equal time intervals is shown below:   Which graph below correctly represents position versus time for this object?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

The area under a graph of ax vs. t from t = ti to t = tf represents

Accepted Answer

A) xf − xi. 
B) vf − vi. 
C) xav. 
D) vav. 
E) aav. 
A) xf − xi. 
B) vf − vi. 
C) xav. 
D) vav. 
E) aav.

Exam 2: One-Dimensional Motion

A swimmer swims 20 laps in a north-south facing pool in 7.00 minutes. Her first lap is toward the north. Her displacement and average velocity are

A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the bullet's acceleration as it passes through the board?

A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.00 minutes. The tortoise wins by a shell (20.0 cm). What was the length of the race?

A problem may be solved more easily when alternative representations are used. The best strategy is to formulate representations in an order that assists in understanding the physical principles involved. Of the orders given below, the one that will work best most often is

The position of an object at equal time intervals is shown below: Which graph below correctly represents position versus time for this object?

The area under a graph of ax vs. t from t = ti to t = tf represents

Getting Started

Vectors

Two- and Three-Dimensional Motion

Newtons Laws of Motion

Applications of Newtons Laws of Motion

Gravity

Conservation of Energy

Energy in Nonisolated Systems

Systems of Particles and Conservation of Momentum

Collisions

Rotation I: Kinematics and Dynamics

Rotation II: a Conservation Approach

Static Equilibrium, Elasticity, and Fracture

Fluids

Oscillations

Traveling Waves

Superposition and Standing Waves

Temperature, Thermal Expansion, and Gas Laws

Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

Entropy and the Second Law of Thermodynamics

Electric Forces

Electric Fields

Gausss Law

Electric Potential

Capacitors and Batteries

Current and Resistance

Direct Current Dc Circuits

Magnetic Fields and Forces

Gausss Law for Magnetism and Amperes Law

Faradays Law of Induction

Inductors and Ac Circuits

Maxwells Equations and Electromagnetic Waves

Diffraction and Interference

Applications of the Wave Model

Reflection and Images Formed by Reflection

Refraction and Images Formed by Refraction

Relativity

Filters