SI System
List 3 different base units of measurement
3 of the following: meter, second, mole, ampere, kelvin, candela, kilogram
Identify the number of significant figures in 145
3
Report 3.25*103 in standard notation
3250
Kelsey goes running. She runs 3 km north, then 8 km west, and finally 6 km south. What distance did Kelsey run?
Kelsey ran 17 km
A swimmer swims for 900 seconds. She swims 800 meters. How fast is she going?
0.9 m/s
List 3 derived units
3 of the following: hertz, newton, pascal, joule, watt, coulomb, volt, ohm, lumen, lux, square meter, cubic meter, meter per second, peter per second squared, reciprocal meter, kilogram per cubic meter,
Identify the number of significant figures in 0.027
2
Report 5.34*10-4 in standard notation
0.000534
Lubo drives to do some errands. First, he goes 3 km to the library. Then, he drives another 4 km to the grocery store. He takes the long way home, which is another 8 km to his house. What was Lubo's displacement?
0 km
A racecar travels at an average speed of 80 m/s in a race. The total distance of the race is 640,000 m. How long does it take the racecar to finish the race?
8000 s
convert 150 millimeters to decimeters
1.5 decimeters
Identify the number of significant figures in 0.2408
4
What number is biggest:
3.14*105
3.14 *106
3.14*10-6
3.14*106
A person runs 3 km north. One hour later, she runs 3 km south. Which of the following statements describes the person’s complete trip?
a.The displacement is 3 km.
b.The distance traveled is 3 km.
c.The distance traveled is greater than the displacement.
d.The displacement is greater than the distance traveled.
While training, Usain Bolt runs with a speed of 9.88 m/s. His plan is to run for as long as he can at that speed. He runs for 60 seconds. How far did he run?
592.8
600 m
How many centigrams are in a dekagram?
1000 centigrams
What is
3.14 + 8.6
reported to the correct number of significant figures?
11.7
Report 5276 in scientific notation
5.276 * 103
A person is driving his car to a store. The store is 800 m north of the person’s starting point. After traveling north 1200 m, the person realizes that he has passed the store. He turns the car around and drives back to the store. Altogether, the trip to the store takes 100 s.
What is the person's distance? What is his displacement?
d = 1600 m
Δx = 800 m North
A person is driving his car to a store. The store is 800 m north of the person’s starting point. After traveling north 1200 m, the person realizes that he has passed the store. He turns the car around and drives back to the store. Altogether, the trip to the store takes 100 s.
what was the person's speed?
what was his velocity?
S = 16 m/s
v = 8 m/s
convert 10 kilometers per hour (km/hr) to meters per second (m/s)
2.8 m/s
What is
14 * 2.75
reported to the correct number of significant figures?
39
Report 0.000853 in scientific notation
8.53 * 10-4
An elevator in an office building completed the following trips:
• 1st floor to 8th floor
• 8th floor to 4th floor
• 4th floor to 13th floor
The distance between each floor of the office building is 3.0 m. What is the distance and displacement of the elevator?
d = 60 m
Δx = 36 m
A student leaves school and walks south, arriving home after 13 min. The distance between the school and her home is 900 m. At home, the student realizes she left a book at school. She walks back, arriving at the school 13 min later.
What was the student's speed? What was her velocity?
S = 70 m/min
V = 0 m/min