Linear Momentum Quiz

What is the formula for linear momentum?

p = m × v (momentum equals mass times velocity).

What are the standard SI units for linear momentum?

kg·m/s (kilogram meters per second).

Is linear momentum a scalar or a vector quantity?

A vector quantity (it has both magnitude and direction).

What is the Law of Conservation of Momentum?

The total linear momentum of an isolated system remains constant if no net external forces act on it.

What is impulse, and how is it related to momentum?

Impulse is the change in momentum, defined as force multiplied by the time interval it acts (J = F·Δt = Δp).

What distinguishes an elastic collision from an inelastic collision?

In an elastic collision, both momentum and kinetic energy are conserved. In an inelastic collision, momentum is conserved, but kinetic energy is not.

What is a perfectly inelastic collision?

A collision where the colliding objects stick together after impact, resulting in maximum kinetic energy loss while conserving momentum.

How does Newton's second law relate to momentum?

The net external force acting on an object equals the rate of change of its linear momentum (F_net = Δp / Δt).