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/cm^{3}. Considering all the results, which person’s results were accurate? Which were precise? Were any both accurate and precise?

A) Rachel: 11.32 g/cm^{3}., 11.35 g/cm^{3}., 11.33 g/cm^{3}.

B) Danaiel: 11.43 g/cm^{3}., 11.44 g/cm^{3}., 11.42 g/cm^{3}.

C) Leah: 11.55 g/cm^{3}., 11.34 g/cm^{3}., 11.04 g/cm^{3}.

---------------------------------------------

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/s^{2}), *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 *= *v*^{2}/*x *c) *v *= *a*/*t *d) *t*^{2} = *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 V ^{2} = - 2AD A=10**