## Nick2019 Group Title Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately, how long does it take until the soccer ball hits the ground again? 2 years ago 2 years ago

1. Rohangrr Group Title

Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately what maximum height does the soccer ball reach? I think this can not be solve due to lack of data.

2. johnnyle530 Group Title

lol!

3. Nick2019 Group Title

Here's the for choices a 1.3 secs b 2.6 secs c 16.0 secs d 27.6 secs

4. Rohangrr Group Title

some options are available or not

5. Nick2019 Group Title

^^^ i put them

6. Rohangrr Group Title

kk

7. lgbasallote Group Title

use the formula to get maximum height first $S_2 - S_1 = V_1 t + \frac12 at$ s2 is the maximum height = not given s1 is initial height = 0 V1 is the initial velocity = 42 a = -9.8 m/s^2 t = time =not given

8. lgbasallote Group Title

obviously that wont work ;)

9. Jonask Group Title

you have to deal with two components of the balls motion ie vertical and horizontal

10. lgbasallote Group Title

use another formula $V_2 = V_1 + at$ v2 is final speed which will be 0 because v = 0 at max height v1 = 42 a = -9.8 now solve this... $0 = 42 -9.8t$ $9.8t = 42$ can you solve for t?

11. Nick2019 Group Title

No this is for my bro i dont know how to

12. lgbasallote Group Title

hmm if you look closely..that last step is just algebra...

13. Nick2019 Group Title

o ok thanks for the help guys

14. lgbasallote Group Title

btw...you need to multiply the time you get from that by 2 because the one we got was just the first half

15. math-hepl-plz Group Title

I got 8.6 and thats not one of the answers.