zigt (zigt) wrote in homework_help,

Physics

Hello.
I am having a great deal of trouble trying to solve these problems.

1.An object falls from rest on a high tower and takes 5.0 s to hit the ground. Calculate the object’s position from the top of the tower at 1.0 s intervals. Make a position-time graph for the object’s motion. In your response, show what you are given, the equation that you used, any algebra required, a table of data, and your graph.
g = 9.8 m/s2

For this one I am having trouble with the concept of finding the position of the object with this limited information.

2.A car accelerates uniformly from +10.0 m/s to +40.0 m/s over a distance of 125 m. How long did it take to go that distance? Show all your work, including the equation used, given and unknown quantities, and any algebra required. Make sure your answer has the correct number of significant figures.

For this one, I think the problem would be easy if a time was specified so I could find the acceleration. However, time is what needs to be found. So, how do I go about doing this?

Thanks!
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