An object is push 7meters across the floor with a force of 50 Newton and then back two it position. Calculate the work done, how much power is used if the above work done is done in 20seconds

it is a negative acceleration

you can cut your hand off if your not

if i am correct, your answer choices are:

a. the temperature remains constant

b. the temperature increases at a constant rate

c. heat flows at a constant rate into the system

d. heat flows at a constant rate out of the system

e. no heat flows into or out of the system

if so, then the answer is e. no heat flows into or out of the system.