Linear Momentum

In an elastic collision, which of the following quantities is always conserved?

Two objects with masses $m_1$ and $m_2$ and initial velocities $v_{1i}$ and $v_{2i}$ undergo an elastic collision in one dimension. Which equations can be used to solve for the final velocities $v_{1f}$ and $v_{2f}$?

A ball collides elastically with another ball that is initially at rest. If the collision occurs in two dimensions, what must be considered when applying the conservation laws?

In an inelastic collision, what happens to the kinetic energy that is lost?

A 5 kg object moving at 4 m/s collides inelastically with a 2 kg object initially at rest. After the collision, the 5 kg object's velocity is 2 m/s in the same direction. How much kinetic energy is lost in the collision?

What is a key characteristic of a perfectly inelastic collision?

A 2 kg mass moving at 5 m/s collides perfectly inelastically with a 3 kg mass at rest. What is the final velocity of the combined mass?

A bullet of mass $m$ is fired into a wooden block of mass $M$ initially at rest on a horizontal surface. The bullet becomes embedded in the block, and the block then slides a distance $d$ across the surface before coming to rest. If the coefficient of kinetic friction between the block and the surface is $\mu$, what is...

Two objects collide. Object A has a mass of 2 kg and an initial velocity of 5 m/s. Object B has a mass of 3 kg and an initial velocity of -2 m/s. After the collision, object A has a velocity of -1 m/s and object B has a velocity of 2 m/s. What type of collision is this?

In an elastic collision, what is conserved?