The longest kickoff in CFL history was 83.2 m.
If the ball remained in the air for 4.12 s,
determine its initial speed

Question

The longest kickoff in CFL history was 83.2 m.
If the ball remained in the air for 4.12 s,
determine its initial speed

raffle_snaffle · Answer

kinematic equations

raffle_snaffle · Answer

do you know the kinematic equations

raffle_snaffle · Answer

v final is 0

anonymous · Answer

yes. I just don't know why I can't seem to solve the question. what I've done is used the velocity v=distance/time and gotten 20.19 and I'm trying to use d=v2t-1/2at^2 but I'm having difficulty. idk

anonymous · Answer

am I doing the question right? :/

raffle_snaffle · Answer

idk let me look it over

anonymous · Answer

okay thanks

raffle_snaffle · Answer

do you know what acceleration is?

raffle_snaffle · Answer

what is g

raffle_snaffle · Answer

what is the acceleration of gravity? You should always know this

anonymous · Answer

yeah acceleration is v/t

anonymous · Answer

and acceleration of gravity would be 9.8 downward

raffle_snaffle · Answer

there are two ways to solve the problem i just figured it out

raffle_snaffle · Answer

Which kinematics equations do you know and which one would you use?

raffle_snaffle · Answer

You are given three knowns and you need to solve for v initial

raffle_snaffle · Answer

So you are given g=-9.81m/s^2, d=83.2m, t=4.12s

raffle_snaffle · Answer

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