Question

15:00 Time Lefto 37:30 Tarunpreet kun Browser + Webcam Question 11 (1 point) Calvin was playing tennis. He served a ball with a velocity of 0.0053 km de of elevation of 19.6°. The height of the ball at the time of impact with tennis the racket was 3.5 m. What was the magnitude of the vertical velocity of the tennis 3.3 s after it was hit? a) 4.99 b) 5.84 O c) 0.0049 d) 30.56 Oe) 16.47 Of) 0.00177 Page 11 of 11 Previous Page Next Page

Answer 1

vsino Socution Kureso 29=19.6 ůx : 0.0053 km/s 5.3m/s 3.5m Velocity after 3-3 Hec. (vertical.) y direction motion >

> şg=9.82 m/s² o= ut at 0 =5.3 sih 19 6 - 9.81t t = 0.181 sel. qoavity acceleration > t' 3.3-0.182 3.118 He. ut at USD + 9.81 X3.118 = 30.56 Answer = 30.56 m/sec)
Answer . D) 30.56m/sec

First ball goes up and its velocity in vertical direction becomes 0 after 0.181 sec and then came down so motion is divided into 2 half. first 0.181 sec and another downward motion of remaining 3.118 sec.