A block experiences a net work of while it is in motion

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

Problem

A block experiences a net work of −40 J-40\,\text{J} while it is in motion. Which statement best describes how its kinetic energy changes? (a) Its kinetic energy remains unchanged. (b) Its kinetic energy increases by 40 J40\,\text{J}. (c) Its kinetic energy decreases by 40 J40\,\text{J}. (d) Its kinetic energy decreases by 20 J20\,\text{J}.

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