A model car is propelled by a cylinder of carbon dioxide gas.The cylinder emits gas at a rate of 5.00 g/s with an exit speed of 80.0 m/s.The car has a mass of 455 g,including the CO₂ cylinder.Starting from rest,what is the car's initial acceleration? A)0.879 m/s² B)40.0 m/s² C)36.4 m/s² D)7.28 m/s² E)1.38 m/s²

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Quizplus · Accepted Answer

The correct answer is A because the initial acceleration of the car is 0.879 m/s². This can be calculated using the formula F = ma, where F is the force applied to the car, m is the mass of the car, and a is the acceleration of the car. In this case, the force applied to the car is the force of the gas exiting the cylinder, which can be calculated using the formula F = mv, where m is the mass of the gas exiting the cylinder per second and v is the exit speed of the gas. Substituting these values into the formula F = ma, we get:F = mv = (5.00 g/s)(80.0 m/s) = 400 g m/s²a = F/m = (400 g m/s²) / (455 g) = 0.879 m/s²

A Model Car Is Propelled by a Cylinder of Carbon