MEASUREMENT: READ 1-1l, 1-2
Sec Review 1-4 Page 19
1) Which SI units would you use for the following measurements?
A) the length of a swimming pool
B) the mass of the water in the pool
C) the time it takes a swimmer to swim a lap
2) Convert the following measurements as indicated.
A) 6.20 mg to kg
B) 3 * 10-9 sec to ms
C) 88.0 km to mm
3) The following students measure the density of a piece of lead three times. The real density of lead is actually 11.34 g/cm3. Considering all the results, which person’s results were accurate? Which were precise? Were any both accurate and precise?
A) Rachel: 11.32 g/cm3., 11.35 g/cm3., 11.33 g/cm3.
B) Danaiel: 11.43 g/cm3., 11.44 g/cm3., 11.42 g/cm3.
C) Leah: 11.55 g/cm3., 11.34 g/cm3., 11.04 g/cm3.
solve for x: Y = Gm/x + r
the shape of a quadratic relationship a) y = 1/x
the equation of a linear relationship b. straight line
the shape of the graph of a constant increase c) y = mx + b
the equation of a quadratic relationship d. y = ax 2 + bx + c
If a is acceleration (m/s2), v is change in velocity (m/s), x is change in position (m), and t is the time interval (s), which equation is dimensionally correct?
a) t = x/a b) t = v2/x c) v = a/t d) t2 = x/a
Plot these points and find a best curve fit:
Solve these equations for T (T not zero)
D= VT + ½ A T A= -V/T V2 = - 2AD A=10