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slackerz

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  1. What is the magnitude of gravity and how does it apply to objects? This is the very question that students in Regents physics answered on Monday, October 18th. The students had to design a lab using only a stopwatch, a ball, a meter stick, and their knowledge of physics. In their group, team members decided to write their procedure as such: [list type=decimal] [li]measure (in meters) the height of the ceiling to the ground.[/li] [li]using a stopwatch, determine the time it takes to drop a ball from the ceiling to the time it hits the ground.[/li] [li]repeat 9 more times, recording each result in a table or chart.[/li] [li]find the average time from the ten previous results.[/li] [li]Using kinematic equations, solve for the magnitude of gravity's acceleration.[/li] [li]calculate percent error using the following equation: measured value- accepted value / accepted value.[/li] [list type=decimal] [li]mark a persons height when one arm is stretched upwards to its limit. mark this height with a piece of tape.[/li] [li]have the student put a small piece of tape on their fingertips.[/li] [li]when they jump, stick the tape onto the wall at the pick of their jump.[/li] [li]measure the distance between the two pieces of tape and record (in meters).[/li] Even after all of this was done, the cruel and inhumane teacher made them do yet another test. The students had to yet again calculate the vertical displacement of their jumps but this time, they only had stopwatches and their knowledge of physics. The short procedure went as such: [list type=decimal] [li]record in seconds the time lapse that the student was in the air.[/li] [li]use kinematic equations to solve for "D" in the equations.[/li] [li]Calculate percent error.[/li] The students are pushed to the test every day by this demanding teacher but it seems to obviously help their comprehension of physics and its surrounding forces.
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