a metal block of mass 5kg lies on a rough horizontal platform. if a horizontal force of 8N applied to the block through its centre of mass just slides the block on the platform, between the block and the platform is

Water flows through a garden hose which is attached to a nozzle. the water flows through hose with a speed of 2.19 m/s and through the nozzle with a speed of 19.8 m/s. calculate the maximum height (in m) to which water could be squirted if it emerges from the nozzle and emerges with the nozzle removed.