Physics Unit 1 Review

Physics - Unit 1 Review

​Items

R

1. Scientific Notation

2. Significant Figures

3. Metric System

4. Dimensional Analysis

5. Right Triangle Trig

6. Vectors and Vector addition ​

Some text here about the topic of discussion

Multiple Choice

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷
• 0.12  x  10⁷
• 1.2  x  10⁶
• 1.2  x  10⁷

Multiple Choice

Change from standard form to scientific notation:  450,000

• 4.5  x  10⁵
• 45  x  10⁵
• 4.5  x  10⁴
• 4.5  x  10⁶

Multiple Choice

Change from standard form to scientific notation: 0.004078

• 4.078  x  10^-3
• 4.078  x  10³
• 40.78  x  10^-4
• .4078  x  10^-2

Multiple Choice

Try to change the number back to standard form: 3.97  x  10^-2

• 0.000397
• 0.0397
• 0.0000397
• 0.397

All non-zero numbers are significant

EG: 932 has three significant figures

54.2 has three significant figures



Multiple Choice

How many significant figures are there in 3987?

• 4

• 3

Leading Zeroes are never significant

0123 has three significant figures

0.0005 has one significant figure

Multiple Choice

Number of significant figures in 0.0003402 are

• 3

• 4

• 7

• 8

Trailing zeros with decimals are significant

100 has one significant figure

100.20 has five significant figures

32.20000 has seven significant figures

Multiple Select

Choose all numbers that have three significant figures

• 530

• 503

• 53.20

• 0.0520

• 0.5020

​Trailing Zero's when there is no decimal, ARE NOT significant

Fill in the Blank

Identify, how many significant figures does the following number have?

$$32000$$  

Multiple Choice

How many significant figures: 0.012 km

• 1
• 2
• 3
• 4

Multiple Choice

How many significant figures: 450 m

• 3

• 2

• 1

• 0

​When Multiplying / Dividing measurements

​It's all about the number of Significant Figures... and you cant have more than the least

​3.50 m x 3.1 m = ?

​The answer must be rounded to the least number of significant figures.

3.50 has 3 sig fig's

3.1 has 2 sig fig's

​

The answer must be 11 m²​

​When add/subt measurements it's all about the number of decimal places... and you can't have more than the least

​3.25 cm + 2.1 cm = ?

​

The answer must be rounded to 1 decimal place​

​

Answer = 5.4 cm​

Multiple Choice

How many Significant Figures in the number below?
0.456

• 3
• 4
• 2
• 1

Multiple Choice

How many Significant Figures in the number below?
4,500

• 3
• 4
• 2
• 1

Multiple Choice

Solve & Round to Correct Sig Figs.
4.5 + 4.32 = 

• 8.8
• 8.7
• 8
• 8.0

Multiple Choice

Solve & Round to Correct Sig Figs.
4.5 x 2.34 = 

• 11
• 10.52
• 10.5
• 10

Base Units

• Volume = Liters = L

• Mass = Grams = g

• Length = meters = m

The Metric System

Multiple Select

Which units are the BASE units in the metric system? Check all that apply.

• Meters

• Liters

• Grams

• Inches

• Miles

Converting Units

• Changing a Metric Units to another Metric Unit

• Moving BIG unit to small Multiply

• Moving small to BIG Divide

Multiple Choice

42 L = ? mL

• 4,200

• .0042

• 4.20

• 42,000

Multiple Choice

40 mL =  ? cL

• 400
• 4000
• 4
• 0.4

Multiple Choice

3 cm = ? mm

• 30

• 300

• 3000

• 0.3

Multiple Choice

75.2 cm = ? m

• 0.752

• 7.52

• 75.2

• 752

Multiple Choice

The length of a desk is 3.5 feet. How many centimeters is the length?

(2.54 cm =1 inch)

• 60

• 120.23

• 106.68

• 117.12

Multiple Choice

Convert 300 feet/hour into inches/second

• 10

• 100

• 1

• 1000

Multiple Choice

The human esophagus us about 250 mm log. How long is that in inches?

• 10.64 in
• 9.84 in
• 11.35 in
• 8.84 in

Multiple Choice

A bicycle has a speed of 6.00 m/s. What is its speed in km/h?

• 21.6 km/h

• 16.67 km/h

• 2.16 km/h

• 1.67 km/h

Multiple Choice

Jackrabbits are capable of reaching speeds up to 40 miles per hour. How fast is this in feet per second? (Round to the nearest whole number.)

5,280 feet = 1 mile

• 95 feet per second

• 59 feet per second

• .45 feet per second

• 40 feet per second

Multiple Choice

How many minutes are in a year?

• I can't count that high.
• 525,600min
• 52,560min
• 31,536,000min

Multiple Choice

Find the ratio for sinA. (Reduce the fraction)

• 36/27
• 4/5
• 36/45
• 3/5

Multiple Choice

Which side is opposite of angle A?

• 5

• 12

• 13

Multiple Choice

A hawk sitting on a tree branch spots a mouse on the ground 15 feet from the base of the tree.  The hawk swoops down toward the mouse at an angle of 30 degrees. What is the distance from the tree branch to the mouse? 

• 7.5 ft 
• 15 ft 
• 26 ft 
• 30 ft 

Multiple Choice

A 16 foot ladder leans against a building.  If the angle the ladder makes with the ground is 68°, how high up the building does the ladder reach?

• 39.6
• 6.0
• 14.8
• 13.6

Multiple Choice

Find the measure of the indicated angle. Round to the nearest tenth.

• 35.8°

• 43.8°

• 46.2°

• 54.2°

Multiple Choice

A Frisbee that flies at a speed of 1.8 m/s north relative to the air encounters a tailwind that travels at 1.2 m/s. What are the speed and direction of the Frisbee relative to the ground?

• 0.60 m/s north

• 0.60 m/s at an 45 degrees north of east.

• 3.0 m/s north

• 0.60 m/s south

• 3.0 m/s south