2. A person drives 3 km West. The person then turns around and travels 1 km East. Finally,

the person travels 2 km East. The total trip takes 2 hours.

or crea

a) Sketch the motion of the person. Clearly label positions (number and units) and

directions throughout the bear's trip.

Also, label displacement vectors with magnitudes during the person's trip.

o of

I

b) What total distance does the person travel?

c) What is the person's total displacement? (Include magnitude and direction.)

nents

d) What is the person's average speed?

e) What is the person's average velocity? (Include magnitude and direction.)

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

statement #3 on andre"s list is false.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.