albert is riding his scooter at a velocity of 80 km/hour, when he sees an old woman crossing the road 45m away. he immediately steps hard on the breaks to get the maximum decceleration of 7.5 m/s^2. how far will he go before stopping? will he hit the old woman or not?

please answer...with solutions..

2007-01-21 19:54:57 · 3 answers · asked by antoinekingx 1 in Physics

0 ⤊

where is the snow?

kids upset where is the snow do they really no what the weather is going 2 do

2007-01-21 19:52:50 · 8 answers · asked by hayley m 3 in Weather

1 ⤊

Did human flys?

2007-01-21 19:44:01 · 9 answers · asked by raj_prabhur 1 in Medicine

1 ⤊

Why earth's shape is elliptical and not oval/circle/square/triangle?

2007-01-21 19:41:40 · 9 answers · asked by vith t 1 in Geography

0 ⤊

How do I write a timeline of the atom progression overview?

A drawing of the timeline would be much appreiated

2007-01-21 19:38:43 · 1 answers · asked by Ang3liine Kang 1 in Chemistry

0 ⤊

What is the qualiy of water with reference to minerals. What are the methods to remove excess minerals?

The water what I'm use for drinking was tested for its mineral contents. pH is 8.3 and it fails for acidity, alkalinity, Calcium, magnesium, nitrates, sulphates, chlorides. its conductivity is 500.

2007-01-21 19:37:00 · 2 answers · asked by Kannan 1 in Chemistry

0 ⤊

What are the differences between the old models of an atom and the current model of an atom?

The comparisons between the models of atoms

2007-01-21 19:36:25 · 5 answers · asked by Ang3liine Kang 1 in Chemistry

3 ⤊

What was named first? The colour orange or the fruit?

2007-01-21 19:33:16 · 15 answers · asked by jason i 1 in Botany

1 ⤊

how does a dynamo work?

2007-01-21 19:32:54 · 10 answers · asked by Anonymous in Engineering

0 ⤊

kepler's law + newton's law?

1.Explain how Kepler's 3rd law and Newton's law of universal gravitation predicted a ring of satellites that are:
a) directly above the equator.
b) all at the same height.

(this ring of satellites does now exist, but Arthur C Clarke predicted it in this way)

You should use any reasonable assumptions about the usefulness and logistics of satellite communication (hint: this would be a good place to start your reasoning).

2007-01-21 19:31:47 · 1 answers · asked by Anonymous in Physics

1 ⤊

What is a tortoise shell made from?

Answer required for a 6 year old. Nice and simple please

2007-01-21 19:25:07 · 16 answers · asked by Anonymous in Zoology

0 ⤊

explain Y=a(x-b)+c?

2007-01-21 19:23:53 · 3 answers · asked by Anonymous in Mathematics

2 ⤊

what does in mathmatical eqautions pie * hydrogen mean?

pie as 3.141 * hydrogen what does it equal

2007-01-21 19:21:03 · 4 answers · asked by fletch 2 in Mathematics

2 ⤊

What is the value of 121 base 4 + 84 base 16 and explain it?

2007-01-21 19:18:52 · 7 answers · asked by chatatonline 1 in Mathematics

1 ⤊

What happens when the Earth's Magnetic field flipped again in the future?

it was recorded 600,000 years ago when the Magnetic North became the South and vice versa..I have heard that flipping happens every 200,000 years in the Earth's Magnetic Core but I do not have an idea as to what consequences will this phenomena do unto us humans.

2007-01-21 19:18:38 · 5 answers · asked by Vergil D 2 in Earth Sciences & Geology

0 ⤊

Why does a lighted object's shape remains with different colors immediately after we close eyes?

Say we look at the rising or setting sun and then we close our eyes.We see that the shape of the Sun remains in our vision,but the colors change,red,orange,green,blue and finally black.This is true for any lighted object.This is sort of resonance of vision.I would like to know why this happens?

2007-01-21 19:16:41 · 3 answers · asked by Anonymous in Physics

2 ⤊

What is the fastest way to compute 285714! (I.e. the factorial of 285714)? Note: Approximate values?

2007-01-21 19:11:43 · 3 answers · asked by aniruddha 1 in Mathematics

12 ⤊

what is the difference between rocket and spaceship?

2007-01-21 19:06:09 · 9 answers · asked by rajalakshmii r 1 in Astronomy & Space

2 ⤊

How do I find the limit as x -> 2 of [sqrt(6-x)-2]/[sqrt(3-x)-1]?

2007-01-21 19:04:52 · 4 answers · asked by alwaysasigh 1 in Mathematics

3 ⤊

Capital of South Africa?

2007-01-21 19:03:22 · 8 answers · asked by Shahzada M 1 in Geography

3 ⤊

need help with my homework?

Michelle has more than 50 hairpins.
if she puts them in packets of 7,she has 5 hairpins left.
if she puts them in packets of 9,she has 6 hairpins left.
How many hairpins does michelle have?

2007-01-21 18:53:45 · 9 answers · asked by Anonymous in Mathematics

0 ⤊

How long (on average) does it take to process your food into faeces?

I have no idea if the poo I just had was from last night'scurry or last weeks pasta. If you could give me an idea I would love to know..

2007-01-21 18:48:59 · 14 answers · asked by Mr X 2 in Biology

0 ⤊

Consider a 5.313 g mixture of FeO and Fe3O4..!!! HELP?

Consider a 5.313 g mixture of FeO and Fe3O4. You react this mixture with an excess of oxygen to form 5.749 g Fe2O3. Calculate the percent by mass of FeO in the original mixture.

2007-01-21 18:47:47 · 1 answers · asked by Moe 2 in Chemistry

1 ⤊

How many teeth a mosquito have?

2007-01-21 18:44:45 · 14 answers · asked by mur2za_mail 1 in Zoology

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