A track runner takes off in a 4 x 100-meter relay. They then hand off to the next person, who then runs 100 meters till they hand off to the next team member. This process is continued till the race is completed. a) Calculate the distance of each runner b) Calculate the displacement of each runner (The curves have a distance straight across of 73 meters)

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2