🚀 go-pugleaf

Hi guys,

I could really use some help with a couple of questions for my physics
homework. Here they are:

A speedy tortoise can run at 10.0 cm/s and a hare can run 20 times as
fast. In a race they start at the same time, but the hare stops to rest
for 2.0 minutes, and so the tortoise wins the race by 20 cm.

a) How long does the race take?
b) What is the length of the race?

I can't figure out what equation to use to solve this problem or how to
even begin figuring it out, it's just so confusing! Can someone help me
please?

Here is the second question I am having trouble with:

A particle moves along x-axis according to the equation
x = 2.0 + 3d - 1.0t (the last t is squared), where x is in meters and t
in seconds. At t= 3.0 seconds, find:

a) The position of the particle
b) Its velocity
c) Its acceleration

First of all, what is the variable d??? I can't even figure that out. I
do know that I have to use the rules of differential calculus but even
when I do that, I come out with some weird answer, like -3 m/s for the
velocity. When I graph the position-time graph, I get a slope of -2 m/s
for the velocity.

Please send any advice to calidream@hotmail.com
Much appreciated and thanks in advance!

Ryan A. Rowe
calidream@hotmail.com