Question

A body of mass $2kg$ is projected with an initial velocity of $5m{s}^{-1}$ along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is

• A. $250J$
• B. $2.5J$
• C. $10J$
• D. $25J$

Answer 1

Answer: (D)

$W=\frac{1}{2}m{v}^2$