Question

ListenA soccer ball kicked on a level field has an initial vertical velocity component of 15.0 meters per second. Assuming the ball lands at the same height from which it was kicked, what is the total time the ball is in the air? [Neglect friction.]0.654 s1.53 s3.06 s6.12 s

Answer 1

Answer:3.06 s

Explanation:

Given

Vertical component of velocity i.e. $v\sin \theta =u_y$=15 m/s

ball land on the same height as it is launched i.e. vertical displacement is zero

$h=u_yt+\frac{at^2}{2}$

$0=15\times t-\frac{9.81\times t^2}{2}$

$t=\frac{2\times 15}{9.8}$

$t=3.06 s$