PHYSICS INTRO:

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.

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Math TEST:

ALL: 

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

            e) 

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

HONORS:

Plot these points and find a best curve fit:

X    Y

2    11

3    16

6    26

8    35

10    43.5

Solve these equations for T (T not zero)

D= VT + ½ A T    A= -V/T    V² = - 2AD        A=10