NC Physics Exam Questions
Copyright © 2004-2019
All rights reserved.
Used with
permission
.
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Copyright © June 2017-2019
Catharine H. Colwell
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North Carolina Physics
EOC 2009 Part 2 (22-40)
Accessed 10 June 2017 at
http://www.NCpublicschools.org
released Fall 2009
A
B
C
D
22. An athlete running 2.6 m/s increases his velocity to 3.7 m/s in 2.7 s. What is the acceleration of the runner?
0.41 m/s/s
1.2 m/s/s
1.4 m/s/s
2.3 m/s/s
A
B
C
D
23. Which pair of graphs represent the correct relationship between displacement and the velocity of a moving object?
A
B
C
D
24. The graph represents the position of a cart as a function of time.
What is the velocity at 6 seconds?
0.33 m/s
0.43 m/s
0.50 m/s
1.0 m/s
A
B
C
D
25. An object travels around a 120-m radius circular path at a constant 70 m/s. The centipetal force on the object is 3.5 × 10
^{4}
N. What is the mass of the object?
4.17 × 10
^{0}
kg
8.57 × 10
^{2}
kg
6.00 × 10
^{4}
kg
1.43 × 10
^{6}
kg
A
B
C
D
26. A boat moves 2.5 m/s north across a river flowing 1.2 m/s east. What is the speed of the boat relative to the shore?
1.3 m/s
2.2 m/s
2.5 m/s
2.8 m/s
A
B
C
D
27. A ball is thrown with a velocity of 12.0 m/s at an angle 30.0° above horizontal. Ignoring air resistance, what is the ballâ€™s vertical component of velocity?
6.00 m/s
6.93 m/s
10.4 m/s
20.8 m/s
A
B
C
D
28. A student pushes a 35-kg block on a frictionless, horizontal surface with a horizontal force of 18 N . If the block is initially at rest, what is the speed of the block after the student pushes the block 20.1 m?
2.3 m/s
4.5 m/s
6.3 m/s
21 m/s
A
B
C
D
29. The diagram represents a block with two applied forces.
Ignoring friction, how much force pulls the object to the left?
120 N
350 N
620 N
720 N
A
B
C
D
30. This diagram represents a 1.9-kg object in static equilibrium hanging from two strings, I and II.
What is the force on string II?
28 N
21 N
19 N
17 N
A
B
C
D
31. A 3.0 × 10
^{3}
-kg truck traveling at 20.0 m/s in a test laboratory collides into a wall and comes to rest in 0.10 s. What is the magnitude of the average force acting on the truck during the collision?
1.5 × 10
^{1}
N
1.5 × 10
^{3}
N
6.0 × 10
^{3}
N
6.0 × 10
^{3}
N
A
B
C
D
32. A ball is released from the top of an inclined plan as shown below.
Ignoring friction, where will the potential energy (PE) and kinetic energy (KE) of the ball be at a maximum?
PE at J, KE at M
PE at K, KE at L
PE at L, KE at K
PE at M, KE at J
A
B
C
D
33. A 588-N person carrying 294 N of equipment starts climbing a mountain that is 3,118 m high. What is the minimum energy required for the person to climb the mountain?
2.81 × 10
^{5}
J
9.17 × 10
^{5}
J
1.83 × 10
^{6}
J
2.75 × 10
^{6}
J
A
B
C
D
34. A machine lifts a 35-kg object 20.0 m in 2.0 s. How much power is produced by the machine to lift the object?
350 W
890 W
3,400 W
6,900 W
A
B
C
D
35. A student throws an object downward. The initial kinetic energy of the object is 360 J. When the object reaches the ground, the kinetic energy of the object is 3 times the initial kinetic energy of the object. What was the initial potential energy of the object?
360 J
720 J
1,100 J
1,400 J
A
B
C
D
36. The diagram represents two pulses moving toward each other on a rope.
What occurs when the pulses meet?
A
B
C
D
37. A light ray traveling through air is incident on a pool of water. If the light has an angle of incidence of 30.6°, what is the angle of refraction in the water?
22.5°
30.6°
42.6°
48.8°
A
B
C
D
38. This diagram represents a wave.
If each point on the wave takes 0.020 s to travel from X to Y, what s the period of the wave?
0.0080 s
0.045 s
0.18 s
0.26 s
A
B
C
D
39. If all bulbs and power sources shown are identical, which circuit contains only 2 lit bulbs?
A
B
C
D
40. The diagram represents a DC circuit.
What is the total resistance of the circuit?
25 Ω
28 Ω
39 Ω
58 Ω
Additional North Carolina Exam Questions
NC Physics Exam Questions
Copyright © 2004-2019
All rights reserved.
Used with
permission
.
PhysicsLAB
PDF conversion
Copyright © June 2017-2019
Catharine H. Colwell
All rights reserved.