NY Regents
June 2012, Part 1
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Refer to the following information for the next two questions.
In a drill during basketball practice, a player runs the length of the 30.-meter court and back.
The player does this three times in 60. seconds.
1. The magnitude of the player’s total displacement after running the drill is
(1) 0.0 m
(2) 30. m
(3) 60. m
(4) 180 m
2. The average speed of the player during the drill is
(1) 0.0 m/s
(2) 0.50 m/s
(3) 3.0 m/s
(4) 30. m/s
3. A baseball is thrown at an angle of 40.0° above the horizontal. The horizontal component of the baseball’s initial velocity is 12.0 meters per second. What is the magnitude of the ball’s initial velocity?
(1) 7.71 m/s
(2) 9.20 m/s
(3) 15.7 m/s
(4) 18.7 m/s
4. A particle could have a charge of
(1) 0.8 x 10-19 C
(2) 1.2 x 10-19 C
(3) 3.2 x 10-19 C
(4) 4.1 x 10-19 C
5. Which object has the greatest inertia?
(1) a 15-kg mass traveling at 5.0 m/s
(2) a 10.-kg mass traveling at 10. m/s
(3) a 10.-kg mass traveling at 5.0 m/s
(4) a 5.0-kg mass traveling at 15 m/s
6. A car, initially traveling east with a speed of 5.0 meters per second, is accelerated uniformly at 2.0 meters per second2 east for 10. seconds along a straight line. During this 10.-second interval the car travels a total distance of
(1) 50. m
(2) 60. m
(3) 1.0 x 10
2
m
(4) 1.5 x 10
2
m
7. Which situation describes an object that has no unbalanced force acting on it?
(1) an apple in free fall
(2) a satellite orbiting Earth
(3) a hockey puck moving at constant velocity across ice
(4) a laboratory cart moving down a frictionless 30.° incline
8. A child riding a bicycle at 15 meters per second accelerates at −3.0 meters per second2 for 4.0 seconds. What is the child’s speed at the end of this 4.0-second interval?
(1) 12 m/s
(2) 27 m/s
(3) 3.0 m/s
(4) 7.0 m/s
9. An unbalanced force of 40. newtons keeps a 5.0-kilogram object traveling in a circle of radius 2.0 meters. What is the speed of the object?
(1) 8.0 m/s
(2) 2.0 m/s
(3) 16 m/s
(4) 4.0 m/s
10. A 5.00-kilogram block slides along a horizontal, frictionless surface at 10.0 meters per second for 4.00 seconds. The magnitude of the block’s momentum is
(1) 200. kg•m/s
(2) 50.0 kg•m/s
(3) 20.0 kg•m/s
(4) 12.5 kg•m/s
11. A 0.50-kilogram puck sliding on a horizontal shuffleboard court is slowed to rest by a frictional force of 1.2 newtons. What is the coefficient of kinetic friction between the puck and the surface of the shuffleboard court?
(1) 0.24
(2) 0.42
(3) 0.60
(4) 4.1
12. A number of 1.0-newton horizontal forces are exerted on a block on a frictionless, horizontal surface. Which top-view diagram shows the forces producing the greatest magnitude of acceleration of the block?
13. On a small planet, an astronaut uses a vertical force of 175 newtons to lift an 87.5-kilogram boulder at constant velocity to a height of 0.350 meter above the planet’s surface. What is the magnitude of the gravitational field strength on the surface of the planet?
(1) 0.500 N/kg
(2) 2.00 N/kg
(3) 9.81 N/kg
(4) 61.3 N/kg
14. A car uses its brakes to stop on a level road. During this process, there must be a conversion of kinetic energy into
(1) light energy
(2) nuclear energy
(3) gravitational potential energy
(4) internal energy
15. Which change decreases the resistance of a piece of copper wire?
(1) increasing the wire’s length
(2) increasing the wire’s resistivity
(3) decreasing the wire’s temperature
(4) decreasing the wire’s diameter
16. A stone on the end of a string is whirled clockwise at constant speed in a horizontal circle as shown in the diagram below.
Which pair of arrows best represents the directions of the stone’s velocity, v, and acceleration, a, at the position shown?
17. How much work is done by the force lifting a 0.1-kilogram hamburger vertically upward at constant velocity 0.3 meter from a table?
(1) 0.03 J
(2) 0.1 J
(3) 0.3 J
(4) 0.4 J
18. Two electrons are separated by a distance of 3.00 × 10
−6
meter. What are the magnitude and direction of the electrostatic forces each exerts on the other?
(1) 2.56 × 10
−17
N away from each other
(2) 2.56 × 10
−17
N toward each other
(3) 7.67 × 10
−23
N away from each other
(4) 7.67 × 10
−23
N toward each other
19. Which object will have the greatest change in electrical energy?
(1) an electron moved through a potential difference of 2.0 V
(2) a metal sphere with a charge of 1.0 x 10
-9
C moved through a potential difference of 2.0 V
(3) an electron moved through a potential difference of 4.0 V
(4) a metal sphere with a charge of 1.0 x 10
-9
C moved through a potential difference of 4.0 V
20. The resistance of a circuit remains constant. Which graph best represents the relationship between the current in the circuit and the potential difference provided by the battery?
21. The wavelength of a wave doubles as it travels from medium A into medium B. Compared to the wave in medium A, the wave in medium B has
(1) half the speed
(2) twice the speed
(3) half the frequency
(4) twice the frequency
22. The watt•second is a unit of
(1) power
(2) energy
(3) potential difference
(4) electric field strength
23. Which quantity has both a magnitude and a direction?
(1) energy
(2) impulse
(3) power
(4) work
24. A tuning fork vibrates at a frequency of 512 hertz when struck with a rubber hammer. The sound produced by the tuning fork will travel through the air as a
(1) longitudinal wave with air molecules vibrating parallel to the direction of travel
(2) transverse wave with air molecules vibrating parallel to the direction of travel
(3) longitudinal wave with air molecules vibrating perpendicular to the direction of travel
(4) transverse wave with air molecules vibrating perpendicular to the direction of travel
25. A 3-ohm resistor and a 6-ohm resistor are connected in parallel across a 9-volt battery. Which statement best compares the potential difference across each resistor?
(1) The potential difference across the 6-ohm resistor is the same as the potential difference across the 3-ohm resistor.
(2) The potential difference across the 6-ohm resistor is twice as great as the potential difference across the 3-ohm resistor.
(3) The potential difference across the 6-ohm resistor is half as great as the potential difference across the 3-ohm resistor.
(4) The potential difference across the 6-ohm resistor is four times as great as the potential difference across the 3-ohm resistor.
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