MOTION-SPEED-ACCELERATION UNIT REVIEW SHEET

 1) Suppose you run 10.0 meters in 2.7 seconds, what is your speed?

 

2) Using the speed from Question #1, calculate how long it would take you to run around a 400.0-m long track.

 

3) If you used the entire 4.0-minute (seconds?) break between classes to run, how far could you get using the speed from Question #1?

 

4) How long will it take you to run O'Hagan's Oval 1.30 miles?

a. First Change the distance of 1.30 mi. WB00678_.gif (615 bytes) m    1609 m = 1 mi
      (-----)(-----)=

b. Now solve for time using the distance in m from above:

                 time equation.gif (1272 bytes) =                                                          Change to minutes by dividing by 60

5) It is exactly 27.6 miles to downtown San Diego. If there were a major earthquake in San Diego many people would have to get back to Rancho Penasquitos. If they ran at your calculated running speed from Question #1, how many hours would it take them? Be very careful on units with this question.

a.  First Change the distance of 27.6 mi. WB00678_.gif (615 bytes) m
                (-----)(-----)=

b.  Now solve for time in seconds: time equation.gif (1272 bytes) =

c. Now change seconds WB00678_.gif (615 bytes) hours.  3600 sec = 1 hour

 

 

6) I live 2.42 miles from MVMS. This morning I left my house exactly at 6:31.00 AM and arrived at school exactly at 6:39.00 AM. What was my average speed, in , coming to work this morning on my bike?

 

7) What was my average speed this morning in ? Change WB00678_.gif (615 bytes)

     (-----)(-----)=

8) Here are some sample data from the Golf Ball Lab. Graph this data on separate graph paper. Be sure to make your graph neat and large. Turn your paper Landscape and number the x axis by .10's and number the y axis by 10's

(x)

(y)

Average time (sec)

Distance (cm)

0.76

50.0

1.48

100.0

2.26

150.0

2.98

200.0

9) What is the general equation that describes the shape of your trend line? ____________

10) Calculate the slope (m) of the line.

 

11) Write the mathematical equation of the line. ____________________

12) Use your mathematical equation to predict how far the golf ball will roll in  15.3 min.

a.  First change 15.3 min WB00678_.gif (615 bytes) sec
(-----)(-----)=

b. Now use your sec answer as x in your mathematical equation