1. To load sand into a truck it is driven under a sand dispenser at a steady speed of 0.5ms-1. The sand is added at a rate of 100kgs-1.a) If the truck is 5m long calculate how much sand will be loaded.b) Calculate the force that must be pushing the truck to keep its velocity constant.Hint: Solution: 2. In an attempt to get back to his spaceship, a stranded spaceman throws his boots away one after the other at 10ms-1....