Hello,

Just started calculus. I am fairly comfortable with limit problems in what has been given to us, but I'm thoroughly lost when given a problem like this.

Any help would be appreciated, thanks.

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- Jan 21st 2013, 07:54 AMminneola24Solving limits with free fall
Hello,

Just started calculus. I am fairly comfortable with limit problems in what has been given to us, but I'm thoroughly lost when given a problem like this.

Any help would be appreciated, thanks. - Jan 21st 2013, 09:34 AMhollywoodRe: Solving limits with free fall
When you replace s(a) and s(t) with and , you get a lot of cancellation. Remember the identity .

They're getting you ready for derivatives - the limit you are calculating is just the derivative of s(t) at a.

- Hollywood - Jan 22nd 2013, 06:42 AMminneola24Re: Solving limits with free fall
So s(a) and s(t) are the exact same? Why do they have different letters then?

- Jan 22nd 2013, 06:57 AMhollywoodRe: Solving limits with free fall
No, and . So when you plug them in, 200 cancels and you can factor out -4.9, giving .

- Hollywood