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Writer's picturekeshprad

PhysicsBowl 2016 Q3


3) For this question, we are told that a car accelerates from 0 to 60 km/hr in 4.5 seconds. Now we want to find the acceleration of the car, but when we look at the answer choices, all are in terms of meters per second squared. For all PhysicsBowl questions make sure to be cautious and convert units.

Where v is velocity

After converting units, this becomes a simple kinematics problem.

Where v is velocity, a is acceleration, and t is time

Since we are given the time period and initial and final velocities, we can decide to use this kinematic equation.

Where v is velocity, t is time, and a is acceleration

Answer: D

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