Using the formula S = ut +1/2at²
S=h= 20ft, u = 2ft/s, and a = 10m/s²
Thus; 20 =2t + 20t²
Therefore; 20t²+2t-20=0
Solving the equation quadratically for the value of t,
we get; t = 1.057 or t=-1.182
But t can not be negative,
Therefore, t= 1.1 seconds (to the nearest tenth)
Step-by-step explanation:
<u>Our function:</u>

<u>Include the exponent:</u>

<u>Use the Distributive Property:</u>

<u>Add:</u>

Answer:the mail is 51 the birds are 14 each
Step-by-step explanation: