A student wants to determine their height, but all they have is a stopwatch. They decide to drop a pencil from the top of their head and measure the time it takes the pencil to fall. The student measures a time of 0.63s for the pencil to fall to the ground. Using this information, calculate the student's height in meters. Round your answer to the nearest hundredth. Type your answer as a positive number.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.