Question

A block of mass 2kg slides on a rough horizontal surface ($\mu_k = 0.2$) with initial speed 10m/ s. Find the stopping distance

Hint:

Notice that the mass $m$ cancels out in the calculation ($a = \mu_k mg / m = \mu_k g$). The stopping distance of a sliding object is independent of its mass, depending only on its initial speed and the coefficient of friction.

Answer 1