A sled initially at rest on a frictionless

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A sled initially at rest on a frictionless, horizontal stretch of ice is pulled by a constant horizontal force of

50\;\text{N}

over a distance of

40\;\text{m}

. As it leaves the force region, the sled's speed is measured to be

8.0\;\text{m/s}

. Which of the following values is closest to the mass of the sled? (a)

32\text{ kg}

(b)

63\text{ kg}

(c)

125\text{ kg}

(d)

16\text{ kg}