Physics for Technology

posted by James

I have been out of school 27 years; no Algebra or Trigonometry training: only remedial math.
This class is part of a Diploma program, no placement test required - I am out of my depth.
I had a tutor for an hour last Tues., with another appt. this Tues.
Yet, like I told my instructor; I am years too far behind.

I just need to know what are the correct formulas and steps to use for problems like these:

What is the momentum of a hammer of mass 0.8kg striking a nail at 5 m/s2?
So, p = m v
p = (0.8)(5 m/s)2
p = 20 kg-m/s2
Correct?
A nail stops the hammer in 0.08 seconds: what force is delivered to the nail?
Force is mass times gravity?
So, F = (0.8kg) (9.8 m/s2)
F = (0.8) (9.8)2
F = 76.832 N?
Am I on the right path?

  1. Damon

    What is the momentum of a hammer of mass 0.8kg striking a nail at 5 m/s2?
    So, p = m v
    p = (0.8)(5 m/s)
    p = 4 kg-m/s note velocity is meters/seconds, acceleration is m/s^2


    A nail stops the hammer in 0.08 seconds: what force is delivered to the nail?

    NEWTON #2 Force = rate of change of momentum (m a)
    F = p/t = 4 kg m/s / .08 s
    F = 50 N

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Trig #1

    i don't know how to search for this question can somebody help plzz question is : List as many jobs as you that use trigonometry. net find out what specific training is necessary to be hired for eac job. This is to include the name …
  2. english

    CAN SOMEBODY PLEASE HELP ME WRITE THE REST OF THIS ESSAY. I DON'T KNOW WHAT ELSE TO WRITE AND MY ESSAY IS DUE TOMMOROW. BY THE WAY THIS ESSAY IS NOT ABOUT ME ITS ABOUT SOMEBODY I KNOW. IM JUST TELLING IT IN FIRST PERSON. Ive made a …
  3. AED 204

    Can anyone help me answer this question. I need it to be 200 to 300 words. Riley Behler, a third-grade teacher at the Martin Luther King Elementary School, has been asked to see the principal, Erin Wilkerson, after the students leave. …
  4. AED 204

    Can anyone help me answer this question. I need it to be 200 to 300 words. Riley Behler, a third-grade teacher at the Martin Luther King Elementary School, has been asked to see the principal, Erin Wilkerson, after the students leave. …
  5. Future story Part 2

    Life is so perfect, my hard work and effort has brought me to the occupation I had dreamed of becoming. My desire was to become a Pharmacist, and only post secondary education has brought me to this stage. If it wasn’t for post secondary …
  6. RES/342

    Suppose you devised a training program to raise student scores on a standardized test, such as ACT, or AIMS (like in Arizona). You first administer the test to a random sample of students, record their scores, administer the training …
  7. math Statistics

    Hi I need help with Statistics. Can anyone help me to understand it better?
  8. Statistics

    Your mathematics instructor claims that, over the years, 88% of his students have said that math is their favorite subject. In this year's class, however, only 21 out of 32 students named math as their favorite class. The teacher decides …
  9. Stats Repost

    Your mathematics instructor claims that, over the years, 88% of his students have said that math is their favorite subject. In this year's class, however, only 21 out of 32 students named math as their favorite class. The teacher decides …
  10. Algebra 1

    Fred would like to get at least a C in the class. He got a 68 on the first test. Write an inequality and then solve to find out what Fred would need to get on his next test to have a C in the class. • C≥68 (I honestly do not …

More Similar Questions