Four identical carts move with the same constant speed of on a frictionless

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

Problem

Four identical carts move with the same constant speed of 10 m/s10\,\text{m/s} on a frictionless, straight track. A single horizontal force acts on each cart as described below. Which cart receives the greatest positive instantaneous power from the applied force? (a) Cart D: 60 N60\,\text{N} acting 180∘180^{\circ} opposite the direction of motion (b) Cart B: 40 N40\,\text{N} acting 60∘60^{\circ} above the direction of motion (c) Cart A: 30 N30\,\text{N} acting in the direction of motion (d) Cart C: 50 N50\,\text{N} acting 90∘90^{\circ} to the direction of motion

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