One hazard of space travel is debris left by previous missions. There are several thousand objects orbiting Earth that are large enough to be detected by radar, but there are far greater numbers of very small objects, such as flakes of paint. Calculate the magnitude of the force exerted by a 0.9 mg chip of paint that strikes a spacecraft window at a relative speed of 4200 m/s, given the collision lasts 8 x 10- s. Help on how to format answers: units F =