Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


Consider , let an object of mass, m be made to fall freely from a height h. at the start, the potential energy is mgh and kinetic energy is 0. it is 0 because its velocity is0. the total energy of the object is thus mgh. as it falls, its potential energy will change into kinetic energy. if v is the velocity of the object at a given instant, the kinetic energy would be 1/2 mv2 . as the fall of the object continues , the potential energy would decrease while the kinetic energy would increase. when the object is about to reach the ground, h=0 and v will be the highest. therefore, the kinetic energy of the object would be the same at all points. that is,

potential energy + kinetic energy = constant
mgh + 1/2 mv2 = constant.

0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts