joannithakauga553 joannithakauga553
  • 04-04-2022
  • Physics
contestada

I have an answer but I'm not it sure about it. I just need someone to help confirm it. Thanks​

I have an answer but Im not it sure about it I just need someone to help confirm it Thanks class=

Respuesta :

Paounn
Paounn Paounn
  • 04-04-2022

Answer:

0.40s. He's dead, Jim.

Explanation:

The block accelerates at a rate of [tex]9.81 ms^-^2[/tex]. The moment it's 14 meters from the ground, it has traveled 39 meters, in about [tex]39=\frac12(9.81)t^2 \rightarrow 2.82 s[/tex].

For the man to dodge, the time left is the distance the block takes to go down to 2 meters from ground, or 51 meters from its starting point. Which translates in [tex]51=\frac12(9.81)t^2\rightarrow 3.22s[/tex]

He has thus less than half a second ([tex]0.40s[/tex] to be exact) to dodge.

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