Dyne-sec stands for the unit of:

momentum

Dyne-second (dyne·sec) is the CGS unit of momentum. It is used to measure the quantity of motion in an object, which depends on both its mass and velocity.

Detailed Explanation:
In the CGS (Centimeter-Gram-Second) system of units, dyne-second (dyne·sec) is the unit used to measure momentum. Momentum is a physical quantity that describes the motion of an object and is calculated as the product of an object’s mass and velocity.

• Momentum (p) is given by the formula: p=m×v

where:

• ppp is momentum,
• mmm is mass (measured in grams),
• vvv is velocity (measured in centimeters per second, cm/s).

In the CGS system:

• Dyne is the unit of force, defined as the force required to accelerate a mass of 1 gram by 1 cm/s².
• Therefore, dyne·second is used to represent momentum, combining the units of force and time (since momentum is force × time).