A block of mass is projected along a rough horizontal table with speed and comes to…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

A block of mass

m

is projected along a rough horizontal table with speed

u

and comes to rest after moving a distance

s

. The magnitude of work done by friction on the block equals (a)

m g s

(b)

\mu_k m g s

(c)

\tfrac12 m u^2

(d)

m u^2