Physics, 18.05.2021 18:10 katherine78
a volleyball player has spiked the ball. At the instant the ball leaves her hand, it is 2.6 m above the ground and has an initial vertical velocity of -20 m/s. How long will it take the ball to strike the ground if the opposing team doesn't block it?
Answers: 1
![h=ut+\dfrac{1}{2}at^2\\\text{Insert the values}\\\\2.6=20\cdot t+\dfrac{1}{2}\times 9.8\times t^2\\\\\Rightarrow 9.8t^2+20t-5.2\\\\\Rightarrow t=\dfrac{-20\pm \sqrt{20^2-4\times 9.8\times (-5.2)}}{2\times 9.8}\\\\\Rightarrow t=\dfrac{-20\pm 603.84}{19.8}\\\\\Rightarrow t=29.48\ s\quad [\text{Neglecting negative t}]](/tpl/images/1331/0502/a2e86.png)
Other questions on the subject: Physics
Physics, 21.06.2019 15:00, charleetrill8304
If you were on a jury, do you think you would expect individual characteristics in the evidence? why or why not? what effects might it have if individuals expect to have individuals characteristics presented? this question is for forensic science
Answers: 2
Physics, 22.06.2019 03:00, tylersabin72
1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
Answers: 1
Physics, 22.06.2019 11:10, livichavezp2kcd3
Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four
Answers: 1
You know the right answer?
a volleyball player has spiked the ball. At the instant the ball leaves her hand, it is 2.6 m above...
Questions in other subjects:
Chemistry, 05.03.2021 08:20
Biology, 05.03.2021 08:20
