Roller Coaster Lab.

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Presentation transcript:

Roller Coaster Lab

Predict where the marble will have the greatest GPE & KE. Objective:Compare & contrast the kinetic energy (KE) & potenetial energy (GPE)of a rollercoaster. !@#$%^%#$@%^&*(*&^$%@#@#%&^&**^%$#@##$%^^&&***&%$## Predict where the marble will have the greatest GPE & KE.

Procedures a) Set up rollercoaster ramps & photogate timers. b) Measure height, mass, & velocity of the marble at 7 different positions. c) Record Data in Table. d) Graph data. e) Write a conclusion.

DATA TABLE #1 How do you calculate GPE? Measure: mass in Kg, Gravity (9.8 m/s2 & height in m. Don’t forget to convert grams to kilograms & cm to meters.

Data Table #2 How do measure KE? Measure: mass in Kg, & velocity in m/s. Don’t forget to convert grams to kilograms & cm to meters. You also must ½ the mass & square the velocity

Graph Position Vs KE & GPE Position is the ______________ variable; therefore goes on the _______ axis. Energy is the ______________ variable; therefore goes on the _______ axis. Draw a “ line of best fit” for both graphs use 1 sheet of graph paper.

Title your graph.(also write your name on the paper) Label the X &Y axis. Scale the X & Y axis Mark your data on the same graph Draw a best fit line. Color the lines KE in yellow & GPE in green Write a conclusion. Describe any sources of error.

DATA TABLE#1 GPE position mass (kg) gravity(m/s2) height (m) GPE (J) 1> 0 cm 2>23cm 3>43cm 4>63cm 5>83cm 6>103cm 7>128cm

Data Table #2 KE Kinetic energy Position 1/2m (kg) D (m) T (s) V (m/s) 1- 0 cm 2-23cm 3-43cm 4-63cm 5-83cm 6-103cm 7-128cm