Uhm,,,This is my first time here so I guess don’t expect too much from me… : p
Well, last Friday, Ms. K handed back our labs about slopes. Then we corrected the three sheets that she gave last Thursday. Here are the answers:
1st sheet (Speed vs. Time)
Slope = Y2-Y1
X2-X1
A: 10-0 =.48m/s2
22-0
B: 26-0 =1.18m/s2
22-0
C: 37-0 =2.06m/s2
18-0
D: 56-0 =3.5m/s2
16-0
E: 58-0 =6.44m/s2
9-0
2nd sheet (Determining relationships from graphs)
1st Graph
Slope: 2.7 cm/d
Equation: R= (2.7cm/d) t
2nd Graph
Slope: 0.13 m/s
Equation: y = (o.13m/s) t + 5.0m
3rd Graph
Slope: -1.1m/km
Equation: h = (1.1m/km) d + 3.0m
4th Graph
Slope: $23.60/d
Equation: w = (23.60/d) t
3rd Sheet (Interpreting Skills)
1. a.) Acceleration is directly proportional to force
b.) y = kx ; a = kf
c.) Slope Y = (25-0) m/s2
X (40-0) N
=0.625 kg (1/kg)
d.) Inverse of mass
e.) 23N
f.) interpolation
g.) 33m/s2
h.) extrapolation
2. a.) y is proportional to x2
y = kx2
b.) 3-4s
c.) 3-4s
Graph A:
(It is not accurate but it looks the same though. Just ignore the range and units)
Slope: $23.60/d
Equation: w = (23.60/d) t
3rd Sheet (Interpreting Skills)
1. a.) Acceleration is directly proportional to force
b.) y = kx ; a = kf
c.) Slope Y = (25-0) m/s2
X (40-0) N
=0.625 kg (1/kg)
d.) Inverse of mass
e.) 23N
f.) interpolation
g.) 33m/s2
h.) extrapolation
2. a.) y is proportional to x2
y = kx2
b.) 3-4s
c.) 3-4s
Graph A:
(It is not accurate but it looks the same though. Just ignore the range and units)
Graph B:
(Again just ignore the range and units)
Graph C:
Graph D:
Here are the last questions for this sheet. Try to answer it…..
In which graph is y directly proportional to x?
In which graph does y decreases as x increases?
In which set of data is y inversely proportional to x?
Which graph does not seem to picture a simple relationship?
Which graph has the general equation y = kx2?
And last thing she talked about was the UNIT CONVERSION….seems familiar right??? Well,,, she gave us a worksheet with 10 questions on how to that….
Here it is….
6 km = 6.0 x 10 3 m
4.9 mg = 4.9 x 10 -3 g
7.6 dm = 7.6 x 10 2 mm
32.1 g = 3.21 x 10 3 cg
5.6 x 103 = 5.6 x 10 1 m
760 g = 7.6 x 10 -1 kg
4.50 km2 = 4.5 x 10 6 m2
1.23 g/mL= 1.23 x 10 kg/L
12 km = 1.2 x 10 13 nm
6.4 mg = 6.4 x 10 9 pg
Maybe this table will help you…
In which graph is y directly proportional to x?
In which graph does y decreases as x increases?
In which set of data is y inversely proportional to x?
Which graph does not seem to picture a simple relationship?
Which graph has the general equation y = kx2?
And last thing she talked about was the UNIT CONVERSION….seems familiar right??? Well,,, she gave us a worksheet with 10 questions on how to that….
Here it is….
6 km = 6.0 x 10 3 m
4.9 mg = 4.9 x 10 -3 g
7.6 dm = 7.6 x 10 2 mm
32.1 g = 3.21 x 10 3 cg
5.6 x 103 = 5.6 x 10 1 m
760 g = 7.6 x 10 -1 kg
4.50 km2 = 4.5 x 10 6 m2
1.23 g/mL= 1.23 x 10 kg/L
12 km = 1.2 x 10 13 nm
6.4 mg = 6.4 x 10 9 pg
Maybe this table will help you…
So,,, that’s it… Reminder, we have a test on Tuesday…. Okay??!!!! Aja Aja Fighting!!!!
