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Name: __________________________ Date: _____________
- A right circular cylinder with a radius of 2.3 cm and a height of 1.4 cm has a total surface area of: A) 1.7 × 10 –3^ m^2 B) 3.2 × 10 –3^ m^2 C) 2.0 × 10 –3^ m^3 D) 5.3 × 10 –3^ m^2 E) 7.4 × 10 –3^ m^2
- A square with an edge of exactly 1 cm has an area of: A) 10 –6^ m^2 B) 10 –4^ m^2 C) 102 m^2 D) 10 4 m^2 E) 106 m^2
- Suppose A = Bn^ Cm , where A has dimensions length · time, B has dimensions length^2 · time –1^ , and C has dimensions length · time^2. Then the exponents n and m have the values: A) 2/3; 1/ B) 2; 3 C) 4/5; –1/ D) 1/5; 3/ E) 1/2; 1/
- Which of the following weighs about a pound? A) 0.05 kg B) 0.5 kg C) 5 kg D) 50 kg E) 500 kg
- The SI standard of time is based on: A) the daily rotation of the earth B) the frequency of light emitted by R 86 C) the yearly revolution of the earth about the sun D) a precision pendulum clock E) none of these
- The SI standard of length is based on: A) the distance from the north pole to the equator along a meridian passing through Paris B) wavelength of light emitted by Hg 198 C) wavelength of light emitted by Kr 86 D) a precision meter stick in Paris E) the speed of light
- 1 m is equivalent to 3.281 ft. A cube with an edge of 1.5 ft has a volume of: A) 1.2 × 102 m^3 B) 9.6 × 10 –2^ m^3 C) 10.5 m^3 D) 9.5 × 10 –2^ m^3 E) 0.21 m^3
- There is no SI base unit for area because: A) an area has no thickness; hence no physical standard can be built B) we live in a three (not a two) dimensional world C) it is impossible to express square feet in terms of meters D) area can be expressed in terms of square meters E) area is not an important physical quantity
- Which of the following is closest to a yard in length? A) 0.01 m B) 0.1 m C) 1 m D) 100 m E) 1000 m
- A marble has a radius of 2 mm. The order of magnitude of the number of these marbles that can be placed in a jar with a radius of 3 cm and a height of 10 cm is: A) 10 B) 10 2 C) 104 D) 10 6 E) 198
- A cubic box with an edge of exactly 1 cm has a volume of: A) 10 –9^ m^3 B) 10 –6^ m^3 C) 10 –3^ m^3 D) 10 3 m^3 E) 106 m^3
- A right circular cylinder with a radius of 2.3 cm and a height of 1.4 m has a volume of: A) 0.20 m^3 B) 0.14 m^3 C) 9.3 × 10 –3^ m^3 D) 2.3 × 10 –3^ m^3 E) 7.4 × 10 –4^ m^3
- A nanosecond is: A) 10 9 s B) 10 –9^ s C) 10 –10^ s D) 10 –10^ s E) 10 –12^ s
- The SI base unit for mass is: A) gram B) pound C) kilogram D) ounce E) kilopound
- 1 mi is equivalent to 1609 m so 55 mph is: A) 15 m/s B) 25 m/s C) 66 m/s D) 88 m/s E) 1500 m/s
Answer Key
1. D
2. B
3. D
4. B
5. E
6. E
7. B
8. D
9. C
10. C
11. C
12. C
13. B
14. D
15. E
16. B
17. D
18. B
19. C
20. B
- A car travels 40 kilometers at an average speed of 80 km/h and then travels 40 kilometers at an average speed of 40 km/h. The average speed of the car for this 80-km trip is: A) 40 km/h B) 45 km/h C) 48 km/h D) 53 km/h E) 80 km/h
- The diagram represents the straight line motion of a car. Which of the following statements is true?
A) The car accelerates, stops, and reverses B) The car accelerates at 6 m/s 2 for the first 2 s C) The car is moving for a total time of 12 s D) The car decelerates at 12 m/s 2 for the last 4 s E) The car returns to its starting point when t = 9 s
- A racing car traveling with constant acceleration increases its speed from 10 m/s to 50 m/s over a distance of 60 m. How long does this take? A) 2.0 s B) 4.0 s C) 5.0 s D) 8.0 s E) The time cannot be calculated since the speed is not constant
- The coordinate-time graph of an object is a straight line with a positive slope. The object has: A) constant displacement B) steadily increasing acceleration C) steadily decreasing acceleration D) constant velocity E) steadily increasing velocity
- A particle moves along the x axis from x 1 to x 2. Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude? A) x 1 = 4 m, x 2 = 6 m B) x 1 = –4 m, x 2 = –8 m C) x 1 = –4 m, x 2 = 2 m D) x 1 = 4 m, x 2 = –2 m E) x 1 = –4 m, x 2 = 4 m
- A particle moves along the x axis from x 1 to x 2. Of the following values of the initial and final coordinates, which results in a displacement that is in the negative x direction? A) x 1 = 4 m, x 2 = 6 m B) x 1 = –4 m, x 2 = –8 m C) x 1 = –4 m, x 2 = 2 m D) x 1 = –4 m, x 2 = –2 m E) x 1 = –4 m, x 2 = 4 m
- A car accelerates from rest on a straight road. A short time later, the car decelerates to a stop and then returns to its original position in a similar manner, by first speeding up and then slowing to a stop. Which of the following five coordinate versus time graphs best describes the motion?
A) A
B) B
C) C
D) D
E) E
- Which of the following five coordinate versus time graphs represents the motion of an object moving with a constant nonzero speed?
A) A
B) B
C) C
D) D
E) E
- The graph represents the straight line motion of a car. How far does the car travel between t = 2 s and t = 5 s?
A) 4 m B) 12 m C) 24 m D) 36 m E) 60 m
- Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given by x ( t ) = 27 t – 4.0 t^3 , where t is in seconds. The magnitudes of the initial (at t = 0) velocity and acceleration of the auto respectively are: A) 0; (12 m/s 2 ) î B) 0; (24 m/s 2 ) î C) (27 m/s) î; 0 D) (27 m/s) î; (12 m/s 2 ) î E) (27 m/s) î; (24 m/s 2 ) î
- A particle moves along the x axis according to the equation x = 6 t^2 , where x is in meters and t is in seconds. Therefore: A) the acceleration of the particle is (6 m/s 2 ) î B) t cannot be negative C) the particle follows a parabolic path D) each second the speed of the particle changes by 9.8 m/s E) none of the above
- Two automobiles are 150 kilometers apart and traveling toward each other on a straight road. One automobile is moving at 60 km/h and the other is moving at 40 km/h mph. In how many hours will they meet? A) 2. B) 2. C) 1. D) 1. E) 1.
- Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x ( t ) = 27 t – 4.0 t^3 , where t is in seconds. At the end of 1.0 s the acceleration of the auto is: A) (27 m/s 2 ) î B) (4.0 m/s 2 ) î C) (–4.0 m/s 2 ) î D) (–12 m/s 2 ) î E) (–24 m/s 2 ) î
Name: __________________________ Date: _____________
- A ball is in free fall. Upward is taken to be the positive direction. The displacement of the ball during a short time interval is: A) positive during both ascent and descent B) negative during both ascent and descent C) negative during ascent and positive during descent D) positive during ascent and negative during descent E) none of the above
- An object is thrown straight down with an initial speed of 4 m/s from a window which is 8 m above the ground. The time it takes the object to reach the ground is: A) 0.80 s B) 0.93 s C) 1.3 s D) 1.7 s E) 2.0 s
- A car travels east at constant velocity. The net force on the car is: A) east B) west C) up D) down E) zero
- A freely falling body has a constant acceleration with a magnitude of 9.8 m/s 2. This means that: A) the body falls 9.8 m during each second B) the body falls 9.8 m during the first second only C) the speed of the body increases by 9.8 m/s during each second D) the magnitude of the acceleration of the body increases by 9.8 m/s^2 during each second E) the magnitude of the acceleration of the body decreases by 9.8 m/s^2 during each second
- When a certain force is applied to the standard kilogram its acceleration is 5.0 m/s 2. When the same force is applied to another object its acceleration is one-fifth as much. The mass of the object is: A) 0.2 kg B) 0.5 kg C) 1.0 kg D) 5.0 kg E) 10 kg
- An object dropped from the window of a tall building hits the ground in 12.0 s. If its acceleration has a magnitude of 9.80 m/s^2 , the height of the window above the ground is: A) 29.4 m B) 58.8 m C) 118 m D) 353 m E) 706 m
- One object is thrown vertically upward with an initial velocity of 100 m/s and another object with an initial velocity of 10 m/s. The maximum height reached by the first object will be ______ that of the other. A) 10 times B) 100 times C) 1000 times D) 10,000 times E) none of these
- An object is thrown straight up from ground level with a speed of 50 m/s. If the magnitude of the local gravitational strength is g = 10 N/kg its distance above ground level 6.0 s later is: A) 0.00 m B) 270 m C) 330 m D) 480 m E) none of these
- An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s 2 its distance above ground level 1.0 s later is: A) 40 m B) 45 m C) 50 m D) 55 m E) 60 m
- A lead block is suspended from your hand by a string. The reaction to the force of gravity on the block is the force exerted by: A) the string on the block B) the block on the string C) the string on the hand D) the hand on the string E) the block on Earth
- A heavy ball is suspended as shown. A quick jerk on the lower string will break that string but a slow pull on the lower string will break the upper string. The first result occurs because:
A) the force is too small to move the ball B) action and reaction is operating C) the ball has inertia D) air friction holds the ball back E) the ball has too much energy
- The unit of force called the newton is: A) 9.8 kg · m/s 2 B) 1 kg · m/s 2 C) defined by means of Newton's third law D) 1 kg of mass E) 1 kg of force
- A newton is the force: A) of gravity on a 1 kg body B) of gravity on a 1 g body C) that gives a 1 g body an acceleration of 1 cm/s 2 D) that gives a 1 kg body an acceleration of 1 m/s 2 E) that gives a 1 kg body an acceleration of 9.8 m/s 2
- A stone is released from rest from the edge of a building roof 190 m above the ground. Neglecting air resistance, the speed of the stone, just before striking the ground, is: A) 43 m/s B) 61 m/s C) 120 m/s D) 190 m/s E) 1400 m/s
- Three blocks (A,B,C), each having mass M , are connected by strings as shown. Block C
is pulled to the right by a force F
G
that causes the entire system to accelerate. Neglecting friction, the net force on block B is:
A) zero B) F / 3
G
C) F / 2
G
D) 2 F / 3
G
E) F
G
Name: __________________________ Date: _____________
- Vectors A
G
and B
G
lie in the xy plane. We can deduce that A = B
G G
if: A) Ax^2 + Ay^2 = Bx^2 + By^2 B) Ax + Ay = Bx + By C) Ax = Bx and Ay = By D) Ay / Ax = By / Bx E) Ax = Ay and Bx = By
- In the diagram, A
G
has magnitude 12 m and B
G
has magnitude 8 m. The x component of A + B
G G
is about:
A) 5.5 m B) 7.6 m C) 12 m D) 14 m E) 15 m
- The vector (^) V 3
G
in the diagram is equal to:
A) V 1 − V 2
G G
B) V 1 + V 2
G G
C) V 2 − V 1
G G
D) V 1 cos θ
G
E) V 1 (cos θ)
G
- A certain vector in the xy plane has an x component of 4 m and a y component of 10 m. It is then rotated in the xy plane so its x component is doubled. Its new y component is about: A) 20 m B) 7.2 m C) 5.0 m D) 4.5 m E) 2.2 m
- If A = (2 m) iˆ^ −(3 m) jˆ
G
and B = (1m) iˆ^ −(2 m) jˆ
G
, then A − 2 B =
G G
A) (1m) jˆ B) ( 1m) j− ˆ C) (4 m) iˆ^ −(7 m) jˆ D) (^) (4 m) iˆ^ +(1m) jˆ E) (^) ( 4 m) i− ˆ +(7 m) jˆ
- In the expressions^ r = x ˆi^ + y ˆj
G
for the position vector of a particle and v = vx ˆi + vy ˆj
G
for its velocity: A) (^) the unit vector ˆi might have a unit of meters B) ˆi and ˆj are both variables C) ˆi represents a different vector in the two expressions D) ˆi and ˆj are parallel to each other E) none of the above
- The angle between A = (25 m) iˆ^ +(45 m) jˆ
G
and the positive x axis is: A) 29º B) 61º C) 151º D) 209º E) 241º
