In Newton\'s second law of motion, what is the relationship betweenacceleration

Question

In Newton's second law of motion, what is the relationship betweenacceleration and mass? Acceleration
      is directly proportional tomass.
            is inversely proportional to mass.
       does not depend onmass.
       is divided bymass.


Quantities, or measured properties, that are capable ofchanging values are called
       data.
           variables.
       constants.
       impossible.


Imagine a 10 g block of aluminum ( = 2.7 g/cm3) and a 10 gblock of iron ( = 7.9 g/cm3). Which of the following istrue?
       The block of iron issmaller than the block of aluminum.
            The block of iron is more massive than theblock of aluminum.
       The block of aluminum issmaller than the block of iron
       Both objects have the samevolume.


The property of volume is a measure of
       how much matter an objectcontains.
       the compactness of matterin a given space.
       the extent of the surfaceof an object.
             how much space an objectoccupies.


A tentative scientific explanation which may or may not be rejectedupon further experimentation is called a
       theory.
           hypothesis.
       model.
       principle.


Equations are used to
       describe aproperty.
       define aconcept.
       describe how quantitieschange together.
             All of the above.


What feature of motion is described by acceleration?
       The rate at which speedchanges.
       How quickly final velocityis reached.
           The rate at which velocity changes.
       Whether motion is speedingup or slowing down.

Explanation / Answer

1. In Newton's second law of motion, what is the relationshipbetween acceleration and mass? Acceleration is inverselyproportional to mass. Acceleration = Force / mass. 2. Quantities, or measured properties, that are capable ofchanging values are called variables. 3. The block of iron is smaller than theblock of aluminum. [I think - but not totallysure of this one. It depends on what is meant by 'smaller' - theblock of iron has a smaller volume than the block ofaluminum.] 4. The property of volume is a measure of how much space an object occupies.
5. A tentative scientific explanation which may or may not berejected upon further experimentation is calleda hypothesis. 6. Equations are used to describe all of the above. 7. Acceleration is the rate at whichvelocity changes (the rate at which velocity changes overtime). 2. Quantities, or measured properties, that are capable ofchanging values are called variables. 3. The block of iron is smaller than theblock of aluminum. [I think - but not totallysure of this one. It depends on what is meant by 'smaller' - theblock of iron has a smaller volume than the block ofaluminum.] 4. The property of volume is a measure of how much space an object occupies.
5. A tentative scientific explanation which may or may not berejected upon further experimentation is calleda hypothesis. 6. Equations are used to describe all of the above. 7. Acceleration is the rate at whichvelocity changes (the rate at which velocity changes overtime).

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