Linear momentum: The product of mass and velocity of a moving body is termed what in mechanics?

Introduction / Context:

Basic mechanics distinguishes between several related but different quantities: momentum, impulse, work, power, and moment. Correct terminology is crucial for applying conservation laws and solving collision and dynamics problems.

Given Data / Assumptions:

• Mass m and velocity v describe translational motion.

Concept / Approach:

Linear momentum p is defined as p = m * v. It is a vector quantity pointing in the direction of motion. Momentum conservation is a cornerstone principle for analyzing isolated systems and impacts.

Step-by-Step Solution:

Verification / Alternative check:

Impulse is the time integral of force and equals the change in momentum; moment relates to rotational effects (force * perpendicular distance); power is the rate of doing work. None of these equal m * v.

Why Other Options Are Wrong:

• Moment pertains to rotation, not translation.
• Impulse is change of momentum, not momentum itself.
• Power is work rate; energy is capacity to do work.

Common Pitfalls:

• Using 'moment' when you really mean 'momentum' in translational problems.

Final Answer:

momentum