Respuesta :

Answer:

Here given is :-

Velocity (u) = 10m/s

Gravity (g) = 10 m/s²

Height (h) = ?

Explanation:

v² - u² = 2gh

0² - 10² = 2 × (-10) × h

-100 = -20 h

[tex]h = \frac{ - 100}{ - 20} = 5m[/tex]

V = u + gt

0 = 10 - 10t

10t = 10

[tex]t = \frac{10}{10} = 1 \: sec[/tex]

Total time = 2 sec

Answer:

See below

Explanation:

vf = vo + at        when it reaches top vf = 0    vo = 10m/s      a = -9.81 m/s^2

0 =   10  + (-9.81) t  

t = 1.02 seconds to reach max

time up = time down   so    roundtrip =  2.04 seconds

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