A scientific research drone of mass 32 kg is performing a docking maneuver at an asteroid base. Upon contact with the electromagnetic braking grid, the drone is brought to a complete stop in 90 milliseconds90\text{ milliseconds}90 milliseconds. During this arrestment, the grid exerts an average retarding force of 4.8 kN4.8\text{ kN}4.8 kN on the drone.
Calculate the speed of the drone at the instant it first made contact with the electromagnetic grid. Show your working.
6 exam-style questions on AQA GCSE Physics 5.7 Momentum (HT only), covering 5.7.1 Momentum is a property of moving objects, 5.7.2 Conservation of momentum, and 5.7.3 Changes in momentum. Each one has a worked solution and a mark scheme showing where the marks go.