**Solution : **

**Definition **

**“ The force is the vector product of mass (m) and acceleration (a). ” **

**Formula for Force**

**Force = mass x acceleration **

** ** The equation or the formula for force can

*mathematically*be expressed in the form of:

**F = m a**

Where , F = force, m = mass , a = acceleration

S I unit of Force =** kg m /s ^{2 }or, kg m s^{ -2 } **

= **Newton(N). **

C G S unit of Force =** g cm /s ^{2}** or,

**g m s**

^{ -2} ** = dyne ( dyn )**

Force is a **vector quantity**. *It has magnitude as well as directions.*

UP Guptapl feedback