7.3 A 50 g ball is dropped on to a hard surface and it bou…

7.3 A 50 g ball is dropped on to a hard surface and it bounces. It hits the hard surface at a speed of 12 m. s-1.   What is the kinetic energy of the ball just before it hits the hard surface? (1)       A) 360 J   B) 3600 J   C) 3,6 J   D) 0,36 J  

  TENEO INTERNATIONAL SCHOOL     SUBJECT: iSCIENCE…

  TENEO INTERNATIONAL SCHOOL     SUBJECT: iSCIENCE     YEAR: 8     DATE: 8 JULY 2021     TIME: 85 MINUTES WRITING TIME + 5 MINUTES SUBMISSION + 10 MINUTES TECHNICAL TIME     MARKS: 80     EXAMINER: R ISMAIL      MODERATOR: K GREEN         INSTRUCTIONS   1. The answers you provide to the question paper, must be your own, original work. No copying from any source is allowed. No marks will be awarded for work that is copied.   2. Read all the questions carefully.   3. Use the mark allocation as a guide to how much information is required in your answers.   4. You may use a calculator if necessary, but always show all working out.   5. This paper consists of two sections:  Section A: [20 marks] Section B: [60 marks]   6. Answer all the questions – do not leave any blank.