A cart on a nearly frictionless horizontal track experiences a constant…

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A 2.0 kg2.0\,\text{kg} cart on a nearly frictionless horizontal track experiences a constant air–resistance force of −3.0 N-3.0\,\text{N} (directed opposite the +x+x direction). A student wants the cart to accelerate at +1.5 m/s2+1.5\,\text{m/s}^2 along the +x+x axis by applying a single additional horizontal force. Which of the following choices for the applied force will most nearly accomplish this goal? (a) +7.5 N+7.5\,\text{N} (b) +6.0 N+6.0\,\text{N} (c) +3.0 N+3.0\,\text{N} (d) +4.5 N+4.5\,\text{N}

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