
1. A girl leaves a history classroom and walks 10. meters north to a drinking fountain.
Then she turns and walks 30. meters south to an art classroom. What is the girl’s
total displacement from the history classroom to the art classroom?
(1) 20. m south
(2) 20. m north
(3) 40. m south
(4) 40.
m north 

2. One car travels 40. meters due east in 5.0 seconds, and a second car travels
64 meters due west in 8.0 seconds. During their periods of travel, the cars definitely
had the same
(1) average velocity
(2) total displacement
(3) change in momentum
(4) average speed 

3. A skater increases her speed uniformly from 2.0 meters per second to 7.0
meters per second over a distance of 12 meters. The magnitude of her acceleration
as she travels this 12 meters is
(1) 1.9 m/s^{2}
(2) 2.2 m/s^{2
}(3) 2.4 m/s^{2
}(4) 3.8 m/s^{2}


4. A ball thrown vertically upward reaches a maximum height of 30. meters above
the surface of Earth. At its maximum height, the speed of the ball is
(1) 0.0 m/s
(2) 3.1 m/s
(3) 9.8 m/s
(4) 24 m/s 

5. Which object has the most inertia?
(1) a 0.001kilogram bumblebee traveling at 2 meters per second
(2) a 0.1kilogram baseball traveling at 20 meters per second
(3) a 5kilogram bowling ball traveling at 3 meters per second
(4) a 10.
kilogram sled at rest 
Base your answers to questions 6 and 7 on the information and diagram below. A child
kicks a ball with an initial velocity of 8.5 meters per second at an angle
of 35º with the horizontal, as shown. The ball has an initial vertical velocity
of 4.9 meters per second and a total time of flight of 1.0 second.
[Neglect air resistance.]


6 The horizontal component of the ball’s initial velocity is approximately
(1) 3.6 m/s
(2) 4.9 m/s
(3) 7.0 m/s
(4) 13 m/s 

7 The maximum height reached by the ball is approximately
(1) 1.2 m
(2) 2.5 m
(3) 4.9 m
(4) 8.
5 m 

8 A ball of mass M at the end of a string is swung in a horizontal circular path
of radius R at constant speed V. Which combination of changes would require the
greatest increase in the centripetal force acting on the ball?
(1) doubling V and doubling R
(2) doubling V and halving R
(3) halving V and doubling R
(4) halving V and halving R 
The diagram below shows two small metal spheres, A and B. Each sphere possesses
a net charge of 4.0 × 10^{6} coulomb. The spheres are separated
by a distance of 1.0 meter.


9. Which combination of charged spheres and separation distance produces an electrostatic
force of the same magnitude as the electrostatic force between spheres A and B?


10. A box is pushed toward the right across a classroom floor. The force of friction
on the box is directed toward the
(1) left
(2) right
(3) ceiling
(4) floor 

11. A 40.kilogram mass is moving across a horizontal surface at 5.0
meters per second. What is the magnitude of the net force required to bring the
mass to a stop in 8.0 seconds?
(1) 1.0 N
(2) 5.0 N
(3) 25 N
(4) 40.
N 

12. What is the speed of a 1.0 × 10^{3}kilogram car that has a momentum
of 2.0 × 10^{4} kilogram•meters per second east?
(1) 5.0 × 10^{2} m/s
(2) 2.0 × 10^{1} m/s
(3) 1.0 × 10^{4} m/s
(4) 2.0 × 10^{7}
m/s 
A positive test charge is placed between an electron, e, and a proton, p, as shown
in the diagram below.


13. When the test charge is released, it will move toward
(1) A
(2) B
(3) C
(4) D 

14. If the speed of a car is doubled, the kinetic energy of the car is
(1) quadrupled
(2) quartered
(3) doubled
(4) halved 

15. In which circuit would ammeter A show the greatest current?


16 The diagram below shows a 0.1kilogram apple attached to a branch of a
tree 2 meters above a spring on the ground below.
The apple falls and hits the spring, compressing it 0.1 meter from its rest
position. If all of the gravitational potential energy of the apple on the tree
is transferred to the spring when it is compressed, what is the spring constant
of this spring?
(1) 10 N/m
(2) 40 N/m
(3) 100 N/m
(4) 400 N/m 

17. A 1kilogram rock is dropped from a cliff 90 meters high. After falling 20 meters,
the kinetic energy of the rock is approximately
(1) 20 J
(2) 200 J
(3) 700 J
(4) 900 J 

18. A student does 60. joules of work pushing a 3.0kilogram box up
the full length of a ramp that is 5.0 meters long. What is the magnitude
of the force applied to the box to do this work?
(1) 20. N
(2) 15 N
(3) 12 N
(4) 4.
0 N 

19. A boat weighing 9.0 × 10^{2} newtons requires a horizontal force
of 6.0 × 10^{2} newtons to move it across the water at 1.5
× 10^{1 }meters per second. The boat’s engine must provide energy
at the rate of
(1) 2.5 × 10^{2 }J
(2) 4.0 × 10^{1 }W
(3) 7.5 × 10^{3} J
(4) 9.0 × 10^{3}
W 

20. In order to produce a magnetic field, an electric charge must be
(1) stationary
(2) moving
(3) positive
(4) negative 