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November 21, 2014

Homework Help: physics

Posted by lilman on Sunday, May 6, 2012 at 10:42am.

Which of the following is a unit of temperature?
celsius degree
joule (my choice)
kilogram
calorie
My first choice is joules and then maybe celsius but not real sure. Can someone please help?

My other question is using newtons second law of motion if the force on an object is 20N, and it's mass is 5g, what is it's acceleration?
I need to show the work and I'm getting confused.
accelerarion=force/mass or a=f/m
a=20N/5g
now I'm not sure how to write it from here to get the answer 4m/s^2, which I got from 20/5=4.

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