When I calculate the % error; my result isn\'t less than 5% and I don\'t underst

Question

When I calculate the % error; my result isn't less than 5% and I don't understand why. The masses and lengths are given on page one and the elapsed time is given each time I adjust virtual experiment. The calculations are simple and for the life of me I cannot understand why my percent error doesn't calculate to be less than 5%. Can you please help me determine what I may be doing wrong?

Date Conservation of Momentum Virtual Lab bjectives: Measure the displacement and time of travel for carts before and after an elastic collision. Calculate the corresponding velocities before and after the elastic collision Calculate the momentums before and after the elastic collision. Find the percent error of the total momentums before and after the elastic collusion. Measure the displacement and time of travel for carts before and after an inelastic collision. Calculate the corresponding velocities before and after the inelastic collision. Calculate the momentums before and after the inelastic collision. Find the percent error of the total momentums before and after the inelastic collusion. nstructions: Go to the website http://www.gigaphysics.com/momentum labahtml. Once there, very carefully follow the directions for each section Section 1: Measure the Carts: Find the length of the purple cart, by dragging the cart over the caliper in the upper left corner of th Convert the length to the SI unit of meters, then record your result in the table below. Repeat for th green cart turn over the electronic balance in the upper Find the masses of the carts by dragging each one in to the SI unit of kilograms, then record corner. The balance reads in grams, so convert each mass data. cart Length green Mass of purple cart Mass of green cat Length puple 0,40 0,163 kr Note: These measurement will only stay the same if you don't refresh the screen or click the button to s new experiment.

Explanation / Answer

Hi Student,

as I have checked your calculations all are correct I think you have not taken the accurate value of Velocities and time elapsed as these are the variable factors in determining the momentum

Also use the following concept of momentum conservation:

m1v1+m2v2=(m1+m2)Vf

Which you already applied to the calculation, please check with your mates or repeat the experiment and check whether your values are correct for time elapsed and velocity.

Please feel free to comment below after getting the required data.

Thanks.

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