Physics

My midterm is tomorrow and I have a couple questions that I need to study. Ive tried and tried and cannot figure these out.

1) A ball is dropped from a roof and takes 3.0s to reach the ground. Calculate the elevation of the roof above the ground in meters. (neglect air resistance)

2) A car with a mass of 1500-kg changes its speed from 10.0 m/s to 30.0 m/s during a 10.0s- interval. Calculate the net average force acting on the car during the 10.0s-interval.

  1. 👍 0
  2. 👎 0
  3. 👁 48
asked by Mike
  1. 1) d= 1/2 a t^2 solve for t.

    2) a= deltaV/time

    but force= m*a = m * above.

Respond to this Question

First Name

Your Response

Similar Questions

  1. U.S History

    Forming the united States, what were the two plans that arose at the Convention and who were the people responsible for each plan? Just a minute! Have you asked us all your questions? What have YOU done to find the answers? We

    asked by COOL on January 22, 2007
  2. English

    Hello all. I speak very little of english. My teacher emailed me this and I wan't to make sure I understand correctly. [The final exam will only cover material since the midterm.] this means that final exam will ONLY cover what we

    asked by Shabihi on December 4, 2012
  3. altitude triangle inequality

    hi guys ive be struggling on this problem for a couple of days, so please help if you can Problem:Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive

    asked by Knights on December 31, 2012
  4. GT English(honors)

    For summer work i have to make a notes summary of each required book ive read..the problem is ive never heard or even seen a notes summary before and i am a visual learner can someone please send me an example of one or at least a

    asked by Rachel on July 16, 2005
  5. Math

    My professor gave our class a study guide for our midterm. On that study guide, there were 10 prompts he wanted us to know. Out of the 10, there were 3 prompts that I wasn't confident in. For the midterm, he picked 5 prompts out

    asked by Julie on October 23, 2015
  6. Study?

    I have to take a test tomorrow on math to decide whether or not I can make it into the next grade same for tomorrow for reading. What should I do to study? I don't have a textbook to study cause it's at school. Should I look over

    asked by Anonymous on April 22, 2013
  7. math help plz

    You receive 80% on your first midterm while your friend receives 70%. Taking into consideration the fact that the first midterm is worth 14% of your overall mark, the difference (between receiving 70% and 80% on your midterm) this

    asked by May on September 19, 2010
  8. Physics

    Well, I just found out that I failed my physics midterm. I got a 51. Yes I studied but I still don't get the forces and inclined planes. And my parents are going to kill me if they find out. The midterm brought down my grade to a

    asked by Liz on January 28, 2015
  9. 8th Grade Space and Earth Science

    I have two questions about my study guide for my science test tomorrow. Thank you for any answers that I can get! How does the atmosphere give evidence for divine design? How can a satellite telephone user communicate if radio

    asked by Nicole C. on February 3, 2009
  10. To Derr

    You have made a couple of uncalled for comments to a couple of questions. Your remarks are not only not necessary but they take away our time in reading them to know they are nonsense. This board tries to help students. You are

    asked by DrBob222 on May 12, 2008

More Similar Questions