DO NOW• Hand in “You are the Moving Man”• Change the date on the last blank square of “Do Now” sheet

to Thursday 9.18

• Answer the following– Identify the number of significant digits and the decimal

column with uncertainty for each of the following: 0.00809 kg, 12,030 m, 91.0 mA, 13 in2

– Round each of the following to the number of significant digits indicated in parentheses:

148.20964 m (2), 0.004829 kg (3)– Calculate the following and round correctly:

23.8 m / 2.1 s 230 gal + 152.387 gal

Giga

A. X104

B. X10-6

C. X109

D. x1012

Metric prefix meaning times 10-6

A. Milli (m)B. Micro (m)C. Centi (c)D. Nano (n)

Metric prefix meaning “thousands”

A. MilliB. CentiC. MegaD. Kilo

Metric prefix meaning x10-9

A. GigaB. PicoC. NanoD. centi

Metric prefix meaning “million”

A. MegaB. KiloC. PicoD. Giga

Micro (m)

A. x10-9

B. x10-6

C. x10+3

D. x10+12

45.2 cm = _____ mm

A. 4.52 mmB. 452 mmC. 4,520 mmD. 0.0452 mm

55.2 grams = _____ kg

A. 552 kgB. 55,200 kgC. 0.552 kgD. 0.0552 kg

123,000 ms = ______ s

A. 123 sB. 1.23 sC. 0.123 sD. 1.23x1011 s

25.45 g / 12 cm3 = 2.12083333g/cm3 should be rounded to

A. 2 g/cm3

B. 2.1 g/cm3

C. 2.12 g/cm3

D. 2.121 g/cm3

71 m/s x 182.7 s = 12,971.7 m should be rounded to

A. 12,971.7 mB. 12,972 mC. 12,970 mD. 13,000 m

157.35 m + 124.58 cm=

A. 281.93 mB. 281.93 cmC. 1585.96 mD. 158.60 m

12,300 kg + 85 kg = 12,385 kg should be rounded to

A. 12,385 kgB. 13,000 kgC. 12,390 kgD. 12,400 kg

(8.0 x 1012 )/ (2.0 x 106)

A. 4.0 x 106

B. 4.0 x 1018

C. 16 x 102

D. 4.0 x 102

6.00 x 106 + 4.0 x 104 = ?

A. 10 x 1010

B. 6.5 x 105

C. 4.06 x 104

D. 6.04 x 106

Quantity that has both magnitude and direction:

A. ScalarB. DirectrixC. PointerD. Vector

SI units of mass

A. NewtonsB. KilogramsC. PoundsD. Gallons

The amount of space occupied by an object

A. MassB. VolumeC. DensityD. Weight

Which is NOT a vector quanity?

A. SpeedB. AccelerationC. ForceD. Velocity

Which is NOT a base unit in the SI system?

A. CandelaB. NewtonC. KilogramD. Meter

Precision is affected by_____ while accuracy is affected by ______.

A. Systematic errors, random errors

B. Incorrectly calibrated instruments, taking a large number of measurments

C. Random errors, systematic errors

D. None of the above

The displacement of a person who walks 45 m east and then walks 30 m west is:

A. 75 m westB. 75 m eastC. 15 m eastD. 1.5 m w

Vector quantity describing how much the position of an object changes (and in what direction)

A. DistanceB. VelocityC. DisplacementD. Acceleration

A car that travels 6.0 km in 2 minutes has an average speed of:

A. 12 km/minB. 3.0 m/sC. 50 m/sD. 30 m/s

To find the displacement during a time interval you should determine the ________ on a position-time graph.

A. Area under the curve

B. SlopeC. The durationD. The “rise”

To find the velocity you should determine the ________ on a position-time graph.

A. Area under the curve

B. SlopeC. The durationD. The “rise”

The magnitude of 3.0 m North plus 4.0 m East is:

A. 7.0 mB. 1.0 mC. 5.0 mD. 0.75 m

Acceleration describes:

A. How fast something is moving

B. How fast something is moving and in what direction

C. How quickly the velocity is changing

D. How quickly the position is changing

The slope of a velocity-time graph indicates the _____ of an object

A. DisplacementB. SpeedC. AccelerationD. Distance

Which of the following does NOT describe an object that is accelerating

A. A dropped ball that is speeding up

B. A baseball player slowing down as they slide into home.

C. A car going around a turn at constant speed.

D. A rocket traveling really fast.