I1. MOTION: Show all pertinent solutions involved in solving the following problems. Draw a free body diagram of items. C. Light travels at a speed of about 3 x 10" m/s. How many meters does a pulse of light travel in a time interval of 0.1 s, which is about the blink of an eye? D. A hiker walks 2.00 km north and then 3.00 km east, all in 2.50 hours. Calculate the magnitude and direction of hiker's (a) displacement (in km) and (b) the average velocity (in km/hr) during those 2.50 hours. (c) What was the average speed during the same time interval