ESSENTIAL QUESTION How do I recognize the units of measure for distance, time and speed?

ESSENTIAL QUESTIONESSENTIAL QUESTION

How do I How do I recognize the recognize the

units of measure units of measure for distance, time for distance, time

and speed?and speed?

DISTANCEDISTANCE

metersmeters mm

kilometerskilometers kmkm

centimeterscentimeters cmcm

millimetersmillimeters mm mm

milesmiles mimi

inchesinches inin

feetfeet ft ft

TIMETIME

secondsseconds ss

minutesminutes minmin

hourshours hrhr

millisecondsmilliseconds msms

SPEEDSPEED

Since speed isSince speed is

distancedistance

divided bydivided by

timetime,,

the units of speed arethe units of speed are

the units of distancethe units of distance

divided bydivided by

the units of timethe units of time

SPEEDSPEED

meters per second m/smeters per second m/s

meters per hour m/hrmeters per hour m/hr

kilometers per hour km/hrkilometers per hour km/hr

miles per hour mphmiles per hour mph

centimeters per min cm/mincentimeters per min cm/min

feet per second ft/sfeet per second ft/s

meters per millisecond m/msmeters per millisecond m/ms

List d= , t= , v=List d= , t= , v=

A man runs 200 meters in 25 A man runs 200 meters in 25 seconds. What is his average speed?seconds. What is his average speed?

d=d=

t=t=

v=v=



d= 200 md= 200 m

t= 25 st= 25 s

v= ___ m/sv= ___ m/s

What formula should you use?What formula should you use?


d= 200 md= 200 m

t= 25 st= 25 s

v= ___ m/sv= ___ m/s



d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s

v= ___ m/sv= ___ m/s

Substitute the variables.Substitute the variables.


d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s

v= ___ m/sv= ___ m/s

Substitute the variables.Substitute the variables.


d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s v = (200m) / (25s)v = (200m) / (25s)

v= ___ m/sv= ___ m/s

Solve.Solve.


d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s v = (200m) / (25s)v = (200m) / (25s)

v= ___ m/sv= ___ m/s

Solve.Solve.


d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s v = (200m) / (25s)v = (200m) / (25s)

v= ___ m/s v = 8 ____v= ___ m/s v = 8 ____

List the units of measure.List the units of measure.


d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s v = (200m) / (25s)v = (200m) / (25s)

v= ___ m/s v = 8 ____v= ___ m/s v = 8 ____



d= 200 m v = d / td= 200 m v = d / t

t= 25 st= 25 s v = (200m) / (25s)v = (200m) / (25s)

v= ___ m/s v = 8 m/sv= ___ m/s v = 8 m/s


A toy car travels at 2.5 m/s for 5 A toy car travels at 2.5 m/s for 5 seconds. How far did it go? seconds. How far did it go?

d=d=

t=t=

v=v=



d=d=

t= 5 st= 5 s

v= 2.5 m/sv= 2.5 m/s



d=d= d = vtd = vt

t= 5 st= 5 s

v= 2.5 m/sv= 2.5 m/s

Substitute into the formula.Substitute into the formula.


d=d= d = vtd = vt

t= 5 st= 5 s d = (2.5 m/s)(5 s)d = (2.5 m/s)(5 s)

v= 2.5 m/sv= 2.5 m/s

Solve.Solve.


d=d= d = vtd = vt

t= 5 st= 5 s d = (2.5 m/s)(5 s)d = (2.5 m/s)(5 s)

v= 2.5 m/sv= 2.5 m/s

Solve.Solve.


d=d= d = vtd = vt

t= 5 st= 5 s d = (2.5 m/s)(5 s)d = (2.5 m/s)(5 s)

v= 2.5 m/sv= 2.5 m/s d = 12.5 ___d = 12.5 ___



d=d= d = vtd = vt

t= 5 st= 5 s d = (2.5 m/s)(5 s)d = (2.5 m/s)(5 s)

v= 2.5 m/sv= 2.5 m/s d = 12.5 ___d = 12.5 ___



d=d= d = vtd = vt

t= 5 st= 5 s d = (2.5 m/s)(5 s)d = (2.5 m/s)(5 s)

v= 2.5 m/sv= 2.5 m/s d = 12.5 md = 12.5 m


A bee flew across a 12 meter wide A bee flew across a 12 meter wide room at 3 m/s. How much time did room at 3 m/s. How much time did this take?this take?

d=d=

t=t=

v=v=



d= 12 md= 12 m

t=t=

v= 3 m/sv= 3 m/s

Write the formula.Write the formula.


d= 12 md= 12 m

t=t=

v= 3 m/sv= 3 m/s

Write the formula.Write the formula.


d= 12 md= 12 m t = d / vt = d / v

t=t=

v= 3 m/sv= 3 m/s

Substitute.Substitute.


d= 12 md= 12 m t = d / vt = d / v

t=t=

v= 3 m/sv= 3 m/s

Substitute.Substitute.


d= 12 md= 12 m t = d / vt = d / v

t=t= = (12 m) / (3 m/s) = (12 m) / (3 m/s)

v= 3 m/sv= 3 m/s

Solve.Solve.


d= 12 md= 12 m t = d / vt = d / v

t=t= = (12 m) / (3 m/s) = (12 m) / (3 m/s)

v= 3 m/sv= 3 m/s

Solve.Solve.


d= 12 md= 12 m t = d / vt = d / v

t=t= = (12 m) / (3 m/s) = (12 m) / (3 m/s)

v= 3 m/sv= 3 m/s t = 4 ___t = 4 ___

Write the units of measure.Write the units of measure.


d= 12 md= 12 m t = d / vt = d / v

t=t= = (12 m) / (3 m/s) = (12 m) / (3 m/s)

v= 3 m/sv= 3 m/s t = 4 ___t = 4 ___

Write the units of measure.Write the units of measure.


d= 12 md= 12 m t = d / vt = d / v

t=t= = (12 m) / (3 m/s) = (12 m) / (3 m/s)

v= 3 m/sv= 3 m/s t = 4 st = 4 s

ESSENTIAL QUESTION How do I recognize the units of measure for distance, time and speed?

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