The product of mass and velocity is known as

Explanation:

Momentum

• It is defined as the quantity of motion of the body.
• It is measured by mass × velocity.
• Momentum depends on both speed and direction 
• Momentum is a vector quantity as mass is scaler and velocity is vector
• Momentum = Mass × Velocity (p = mv).
• SI unit Kg-m.s^-1

Additional Information

Impulse

• When a large force works on a body for very small time interval, it is called impulsive force.
• An impulsive force does not remain constant, but changes first from zero to maximum and then from maximum to zero. In such case we measure the total effect of force.
• The impulse caused by a force during a specific time interval is equal to the body's change of momentum during that time interval.
• Impulse, effectively, is a measure of change in momentum.
• Impulse of a force is a measure of total effect of force.
• Impulse is a vector quantity and its direction is same as that of force.
• SI unit of impulse is Newton-second or kg-m-s-1.

\(\vec I = \mathop \smallint \nolimits_{{t_1}}^{{t_2}} \overrightarrow {F\;} \cdot dt\)

Where, I = impulse, F = force and dt = very small time interval