A car can accelerate from zero to 25 m/s in 9.5 seconds. If the diameter of the car's tire is 28 cm, the angular acceleration of the tire is A) 89 rad/s². B) 19 rad/s². C) 49 rad/s². D) 9.4 rad/s².

Question

Quizplus · Accepted Answer

The linear acceleration of the car is 25 m/s divided by 9.5 s, which is approximately 2.63 m/s². The radius of the tire is 0.14 m (since the diameter is 28 cm). The angular acceleration is the linear acceleration divided by the radius, which is approximately 18.79 rad/s², rounded to 19 rad/s².

A Car Can Accelerate from Zero to 25 M/s in 9.5