# physics

posted by
**lilman**
.

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.