Thread: Solving 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.

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

So s(a) and s(t) are the exact same? Why do they have different letters then?

No, and . So when you plug them in, 200 cancels and you can factor out -4.9, giving .

- Hollywood