Work, energy, momentum, and oscillation

Kinetic and gravitational potential energy

KE = ½mv2  ·  PE = mgh

m mass, v speed, g gravitational acceleration, h height

Watch forWith no friction, mgh = ½mv², so v = √(2gh) regardless of mass. Doubling speed quadruples KE.

Apply it · 4 questions

  1. Energy lost to friction on a rampMotion, forces, and energy · set 7 · hard
  2. Is the collision elastic?Motion, forces, and energy · set 5 · hard
  3. Kinetic energy when speed doublesMotion, forces, and energy · set 6 · easy
  4. Conservation of energy on a frictionless rampMotion, forces, and energy · set 6 · easy