Post a New Question

Phiysics

posted by on .

A rock is dropped from a hotel and strikes the ground with a particular speed. In order, to double the speed at impact, you would have to drop the rock from the hotel at?


I say impossible to determine

  • Phiysics - ,

    Yoy would have to from the rock from four times the height to get twice the velocity at impact (neglecting air friction). That is because kinetic energy in proportional to V^2. You'd need four times the kinetic energy, and that comes from four times the height (and potential energy)

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question