Date: ontario Virtual Name: School SPH4U UNIT 3 TEST - GRAVITATIONAL AND ELECTRIC FIELDS KU | A TI C 20 20 10 10 Part A - Knowledge and Understanding [20 marks] Multiple Choice - Use a CAPITAL letter that best completes the statement or answers the question [10 marks] 1. A satellite in a circular orbit of radius r around Mars experiences a force of gravity of magnitude F exerted by Mars. The work done by this force on the satellite as it travels halfway around its orbit is? a) 2Fur C) Fr d) Fitr e) zero For questions 2 to 5, use the graph below. G H kinetic energy Energy Separation 2/E BrE 4/E gravitational potential energy 2. If the escape speeds of the rockets are Up, VG, and VH, then a) VF = VG = VH b ) VF > VG > VH C) UF