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Physics Lab Report

Autor:   •  February 3, 2018  •  791 Words (4 Pages)  •  653 Views

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Overall, it was found that there was a relationship between forces and acceleration, but there was no relationship between forces and velocity. When gathering data, any acceleration less than 0.2 m/s2 was to be recorded as zero. So, in figure 2, the last column can actually be replaced with zeroes. This shows that when there is no force present (the cup had landed on the books), there is no acceleration, just a constant velocity. It was a constant velocity because it kept moving in the same straight path without any speeding up or slowing down. However, the second column contains data greater than 0.2 m/s2, meaning the acceleration was large enough to be significant. The numbers in this column were the accelerations before the cup hit the books, meaning there was still a force acting upon the cart. This shows that forces and acceleration have a direct relationship.

This relates back into the motion of the doll after the cart hits the wall. When the cart holding the doll hits the wall, the doll keeps moving with a constant velocity because there is not another force acting upon the doll. The doll doesn’t accelerate forward because there is not an application of a direct force on the doll.

Besides general human error, there were some things that could’ve caused different data to be recorded. For example, each group had a different number of books on the ground. If one group had more books on the ground, it would take less time for the cup to land on the books, making their accelerations much larger than other groups’ accelerations. Also, the carts in each lab were different masses. This could account for different data because if a cart is more massive but is pulled by the same number of pennies as a less massive cart, it will take much longer for the cup to land on the books. This will make it seem like the acceleration was much smaller than other groups’ accelerations, and it will make the data seem insignificant.

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