How Fast?

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How Fast?

To accurately be able to command the robot, you need to understand how fast it can go and what properties may change its performance. NASA have requested a detailed report, supported by data that you have gathered from your robot.

Group Name: *

Member Name: *

Make your robot drive forward for 5 rotations at 50% power

How long did it take to go 5 rotations? *

( second )

What about 10% power? *

( second )

70% power? *

( second )

Fill in the time taken to complete 5 rotations on this table and plot your average on the graph

Draw a line of best fit through the data you have taken.

Based on this data, make a prediction as to how long it will take to do 5 rotations at 65% power. *

( second )

Mark your prediction on your graph in a different colour . Program your robot and see what happens. How close were you? *

( second )

Let us now convert this time taken into a speed. How far does 5 rotations of the wheel take us? *

Refer your previous experiment

Now convert each of these times and distances into a speed for each different power level. Fill in your answers in the table below.

Plot the speed of your robot against the power level on the following graph.

NASA have indicated that in some parts of NXTopia, the loose sand will make it difficult to drive quickly. They have calculated that the robot can not exceed a maximum speed of 25 m m /s OR 10 inches/sec .

What power level is required to meet this speed? *

( % power level )

Mark the speed on your graph in a different colour. Program your robot to travel for 10 seconds and check to make sure your robot stays within the guidelines. *

What would happen if we w ere to run the same experiment on carpet? *

What was the most difficult part of this challenge? *

How did you go about solving it? *

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