Assignements in Physics

Taught by: Korina Dokic and Ina Erceg

1. Yesterday after school you were playing ball with your friends. You kicked the ball and it flew up in the air and stopped on the nearby roof.

Complete the energy changes description:

Chemical energy of your muscles has transformed (just after your kick), into
________________________ and it has transformed into __________________________ energy on the roof.

2. What energy changes happen:
a. When the rocket engine switches on and it lifts up and then falls down.
b. When a bike rider drives fast along the horizontal road and stops using the breaks.

3.Your body is energy converter.
a. What energy does it use?
b. Name two types of energy in which received energy is converted.

4. You went to the first floor carrying a full shopping bag.
a. Where does the energy used for carrying a bag come from?
b. What is the primary amount of that energy?

5. In physical concept you are doing a work every time when you:
Circle the correct answer.
a. take up your school bag from the floor and put it on the table
b. when you carry it on your back
c. when you pull it on the table