Which of the following is a scalar quantity?

**A.Speed**

B.Velocity

C.Displacement

D.Acceleration

E.Noneofthese

A plane traveling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:

A.zero

B.200m/snorth

C.200m/ssouth

D.400m/snorth

**E.400m/ssouth**

When you step on the accelerator to increase the speed of your car, the force that accelerates the caris:

A.the force of your foot on the accelerator

**B.the force of friction of the road on the tires**

C.the force of the engine on the drive shaft

D. the normal force of the road on tires

A riﬂe of mass M is initially at rest but free to recoil. It ﬁres a bullet of mass m and velocity v(relative to the ground). After ﬁring, the velocity of the riﬂe(relative to the ground)is:

A. −mv

B. −Mv/m

**C. −mv/M**

D. −v

E. mv/M

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

**1. 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 m2

B) 3.2 × 10–3 m2

C) 2.0 × 10–3 m3

__D) 5.3__

__×__

__10__

__–3__

__m__

__2__E) 7.4 × 10–3 m2

**2. A square with an edge of exactly 1 cm has an area of:**

A) 10–6 m2

__B) 10__

__–4__

__m__

__2__C) 102 m2

D) 104 m2

E) 106 m2

**3. Suppose**

*A*=*B*

*n*

*C*

*m***, 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; 1/3

B) 2; 3

C) 4/5; –1/5

__D) 1/5; 3/5__E) 1/2; 1/2

**4. 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

**5. The SI standard of time is based on:**

A) the daily rotation of the earth

B) the frequency of light emitted by R86

C) the yearly revolution of the earth about the sun

D) a precision pendulum clock

__E) none of these__**6. 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 Hg198

C) wavelength of light emitted by Kr86

D) a precision meter stick in Paris

__E) the speed of light__**7. 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 m3

__B) 9.6__

__×__

__10__

__–2__

__m__

__3__C) 10.5 m3

D) 9.5 × 10–2 m3

E) 0.21 m3

**8. 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

**9. 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

**10. 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) 102

__C) 10__

__4__D) 106

E) 198

**11. 5.0**

**×**

**10**

**4**

**×**

**3.0**

**×**

**10**

**6**

**=**

A) 1.5 × 109

B) 1.5 × 1010

__C) 1.5__

__×__

__10__

__11__D) 1.5 × 1012

E) 1.5 × 1013

**12. The number of significant figures in 15.0 is:**

A) 1

B) 2

__C) 3__D) 4

E) 5

**13. 1.513**

**+**

**27.3 =**

A) 29

__B) 28.8__C) 28.9

D) 28.81

E) 28.813

**14. The order of magnitude of the number 0.0649 is:**

A) –2

B) 6 × 10–2

C) 10–2

__D) 10__

__–1__E) 0.06

**15. 5.0**

**×**

**10**

**5**

**+**

**3.0**

**×**

**10**

**6**

**=**

A) 8.0 × 105

B) 8.0 × 106

C) 5.3 × 105

D) 3.5 × 105

__E) 3.5__

__×__

__10__

__6__**16. A cubic box with an edge of exactly 1 cm has a volume of:**

A) 10–9 m3

__B) 10__

__–6__

__m__

__3__C) 10–3 m3

D) 103 m3

E) 106 m3

**17. 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 m3

B) 0.14 m3

C) 9.3 × 10–3 m3

__D) 2.3__

__×__

__10__

__–3__

__m__

__3__E) 7.4 × 10–4 m3

**18. A nanosecond is:**

A) 109 s

__B) 10__

__–9__

__s__C) 10–10 s

D) 10–10 s

E) 10–12 s

**19. The SI base unit for mass is:**

A) gram

B) pound

__C) kilogram__D) ounce

E) kilopound

**20. 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