Question

To throw a curve ball, a pitcher gives the ball an initial angular speed of 36 rad/sec. When the catcher gloves the ball 0.595 sec later, it had an average angular deceleration of 0.3 rad/sec^2. What is ball's angular velocity when the catcher catches the ball? How many revolutions does the ball make before being caught? A 500 kg elevator moves upward with acceleration of 2 m/sec^2 though a vertical distance of 25 m. How much work was done by the tension in the elevator cable?

Answer 1

So e2 b) radions turmad S o, 2. 1296-1283.吽qa R 36®. (3ς.gzIS). - 2x 0.3 2 21 367 rad Now So,Irad 363 Re Rex 4o0G Revoluti o ns

S o ㄒㄧ Assu = wơYkd.nd by Tendion: T. S