Kinetic Energy — Prelims Questions

A body of mass $2\,\text{kg}$ is moving with a velocity of $10\,\text{m/s}$. What is its kinetic energy?

If the kinetic energy of a body is quadrupled, what is the change in its linear momentum?

A $0.5\,\text{kg}$ ball is dropped from a height of $20\,\text{m}$. What is its kinetic energy just before it hits the ground? (Assume $g = 10\,\text{m/s}^2$ and neglect air resistance)

A force $F = (3x^2 + 2x)\,\text{N}$ acts on a particle, displacing it from $x=0$ to $x=2\,\text{m}$. If the particle starts from rest, what is its kinetic energy at $x=2\,\text{m}$?

Two bodies of masses $m_1$ and $m_2$ have equal kinetic energies. If $m_1 > m_2$, then which body has greater linear momentum?

A bullet of mass $20\,\text{g}$ is fired from a rifle with a velocity of $400\,\text{m/s}$. What is the kinetic energy of the bullet?