# Homework Help: Units for weight

1. Nov 18, 2007

### pyroknife

1. The problem statement, all variables and given/known data
The units for weight are
A)kg
B) newtons
c) kg(m/s^2), the 2 means squared
d) both b and c

2. Relevant equations

3. The attempt at a solution

i believe the the answer is d am i right?

2. Nov 18, 2007

### Astronuc

Staff Emeritus
You are correct.

Newton (N) is a measure of force.

Also force F is the product of mass (m) and acceleration (a). Unit of mass in SI/mks is kg, and unit of acceleration is m/s2 or units of force are kg-m/s2.

The definition of 1 N is 1 kg-m/s2.

3. Nov 18, 2007

### rock.freak667

you are correct

4. Nov 18, 2007

### dynamicsolo

In fact, choice (c) gives the fundamental units for Newtons, so choice (b) is really the same. So (d) would be correct.

5. Nov 18, 2007

### pyroknife

when you typed "kg-m/s^s" does this "-" mean minus or multiplying?

6. Nov 18, 2007

### dynamicsolo

When applied to units, that is a commonly used notation to indicate multiplication.