Metric Mania
Convert 5 km to meters.
5,000 m
How many significant figures are in:
45.7
3
Write in scientific notation:
450,000
4.5×10^5
(3.0×105)+(4.0×105)
7.0×105
Scalar or Vector?
25 m/s
Scalar
Convert 350 cm to meters.
3.5 m
How many significant figures are in:
0.00620
3
Write in standard notation:
6.2×10-4
0.00062
(8.5×106)−(2.5×106)
6.0×106
Scalar or Vector?
15 m/s North
Vector — it has magnitude AND direction.
A water bottle contains 1.75 L of water. Convert this to milliliters.
1750 ml
How many significant figures are in:
105.04
5
Write in scientific notation:
0.00000875
8.75×10-6
(2.0×103)(4.0×105)
8.0×108
What TWO pieces of information are required for a quantity to be a vector?
Magnitude + Direction
A small object has a mass of 0.0085 kg. Convert its mass to milligrams.
8500 mg
Round 0.0078562 to 3 significant figures.
0.00786
Which number is larger?
3.5×107
or
8.9×106
3.5×107
(9.0×108)÷(3.0×104)
3.0×104
A student writes:
20 m/s
They claim this is a vector.
What information is missing?
direction
A student says:
"0.45 m = 0.0045 cm because centimeters are smaller than meters."
Identify the mistake AND give the correct answer.
he number should become larger when converting to a smaller unit.
0.45 m = 45 cm
Calculate and report your answer using the correct number of significant figures:
12.5 × 4.22
52.75 → 52.8
0.42×108
Explain why this is NOT proper scientific notation and correct it.
The coefficient must be at least 1 but less than 10.
4.2×107
(4.5×106)+(7.5×105)
5.25×106
Two forces act in the same direction:
14 N East →
9 N East →
Whats the total force?
23 N East