An object is placed on a horizontal surface with friction. We pull the object wi
ID: 1525953 • Letter: A
Question
An object is placed on a horizontal surface with friction. We pull the object with a string. Given is that: The absolute value of friction work is larger than the absolute value of the pull work
a) The speed of the object is constant
b) The speed of the object is reduced
c) The speed of the object increases
d) Impossible to say, depends on the chosen positive direction
My answer here is b) The speed of the object is reduced since the work of friction is larger (and with opposite direction) to the pull work
Am i thinking correctly?
Explanation / Answer
yes , the speed of the onject is reduced since the work of friction is larger to the pull work