Ask a New Question

Question

A box slides along a rough floor with initial kinetic energy of 7 J. A person pushes on the box, in the same direction as its velocity doing 25 J of work. The velocity of the box is doubled. Find the magnitude of the work done by friction.
10 years ago

Answers

bobpursley
initial KE=7
final KE=7+25-frictionwork
velocity is doubled, so KE is quadrupled.
final KE=28J

28=7+25-friction
solve for friction
10 years ago

Related Questions

A block slides down a rough plane. The plane makes an angle of 60 degrees with the horizontal, the w... why does a computer need a floopy drive as well as a hard drive It doesn't . None of my computers h... how would the impacts of a flood differ from an MEDC to an LEDC? please could someone help me!?... A box is pushed across the floor against a constant frictional force. The box is pushed across the r... A block slides on a rough 45 degree incline .the coefficient of friction the block and incline is µk... How does the regulation of floodplains help to reduce flood damage?(1 point) Responses It reloca... How does the regulation of floodplains help to reduce flood damage? 1. It protects plant life on th... How does the regulation of floodplains help to reduce flood damage? A. It protects plant life on... How does the regulation of floodplains help to reduce flood damage?(1 point) Responses It protec... How does the regulation of floodplains help to reduce flood damage?(1 point) Responses It protec...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use