In this problem, before entering your answer, be sure to reduce your fraction completely. if you get 8/ 6 for your answer, reduce it to 4/3 before entering it, or else it will be marked wrong. also, don't worry if the numerator is larger than the denominator. it is almost always easier and more useful to further calculations to leave such answers as improper fractions rather than to convert them to mixed numbers such as 1and 1/3.

part a

if you have a quarter of a pie and you cut it in half, what fraction of a pie would each slice represent?

give the numerator followed by the denominator, separated by a comma.

part b

find the value of

17/15⋅2/11.

though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult.

part c

consider the following equivalent expressions:

3/8÷13/12 and 38⋅ab.

what are the values of a and b?

unlike poles attract

a displacement distance is size of displ

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.