Begin with a question. What is something you want to know about free fall?

In free fall, an object moves under the influence of gravitational forceonly. The only acceleration is the acceleration of gravity g. No other force, including air resistance, is acting on such an object. Interestingly, an object in free fall doesn't necessarily need to be falling (that is, moving downwards).

Explanation:

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml