# Question #2970f

##### 1 Answer

Force is a vector. Let me illustrate it's use in the following section.

#### Explanation:

Here is how that Newton's second law appeared in nineteenth century notation,

But, with using vector notation, the equation simply becomes

Where,

Acceleration might also be represented similarly.

The three equations are combined to one : a great economy for the three we would need otherwise.

Now, let us consider work done by a force

The work done, is given as

In terms of scalar product, it becomes,

Similarly, if a force

In vector notation and incorporating a direction for the torque, the expression looks like

There are several other vectors which are related to physical problems. EM fields, gravitational fields, force, displacement, acceleration, momentum, torque, all are vectors, just to name a few.