7th GRADE SCIENCE : Article 25 : THURSDAY 11/16/17 , Tasks to do.

* Activity 2.17   :   Reviewing and working out potential energy .            ( 11/16/17   Thursday )

      2.17.a    Do the papers and word search given to you today.

                        Links to check :   LINK 1    and   LINK 2  and   LINK 3 check it here !!

                                                               Paper 1

                                                               Paper 2

                                                               Paper 3   ( Word search ).

                                                                                                                          ( 10 points ).

         2.17.b    Read and check the following information. After that, use the formula to

                       work out the potential energy at the following wordings: (use a google docs).

                        1)  A stone falling from a building 250m high.

                        2)  A child of 50kg falling after jumping up until 0.6m high.

                        3)  A beisball falling after being thrown from 25m high.

HERE  you have a set up calculator to work out the GPE ( Gravitational potential energy).

Potential Energy is the stored energy of an object given its position relative to a body. Gravitational potential energy is one type of potential energy and is equal to the product of the object’s mass (m), the acceleration caused by gravity (g), and the object’s height (h) as distance from the surface of the ground (the body).

                                        

                                     

                        GPE = 3kg * 9.8m/s2 * 5m = 490J       (490 Joules ).

                                                                                                                                       ( 5 points ).

          2.16.c       >    WATCH THIS VIDEO IN ORDER TO LEARN MORE ABOUT POTENTIAL ENERGY.