- #1

- 50

- 1

What is the physical meaning of multiplication when we multiply two quantities in physics to get a single quantity? Eg. Mass * acceleration = force.

Last edited:

- B
- Thread starter Gurasees
- Start date

- #1

- 50

- 1

Last edited:

- #2

- 231

- 28

- #3

BvU

Science Advisor

Homework Helper

2019 Award

- 13,703

- 3,341

Or area = length * width ?

Physically you get something that has a dimension that is equal to the product of the dimensions of the individual factors.

- #4

- 29

- 6

Consider kinetic energy: ##{1\over2}mv^2##. It is not the fact that you take half of the product of mass and the square of the velocity that is important. It is the fact that, when work is done on a free particle, it is this quantity that changes.

Mass times velocity may be (Newtonian) momentum, but it was not the idea of the product that came first, it was the fact that, if you have a collision between two objects (without friction), it is this quantity that is conserved. It just so happens to be the afore-mentioned product.

ZM

- Replies
- 1

- Views
- 1K

- Replies
- 7

- Views
- 1K

- Last Post

- Replies
- 7

- Views
- 4K

- Last Post

- Replies
- 6

- Views
- 726

- Last Post

- Replies
- 14

- Views
- 4K

- Last Post

- Replies
- 9

- Views
- 1K

- Last Post

- Replies
- 5

- Views
- 4K

- Last Post

- Replies
- 4

- Views
- 1K

- Last Post

- Replies
- 7

- Views
- 975

- Replies
- 3

- Views
- 1K