Question

Can you please help me with this question? :)​

Answer 1

B) 8 sec

Explanation:

• 
  `h=0`

• 
  `40t-5t^2=0`

• 
  `5t(8-t)=0`

• 
  `8-t=0`

• 
  `-t=-8`

So, your answer will be 8, you are right!!

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hope it helps....

have a great day!!