. A 5kg block is supported by a cord and pulled upward with an acceleration of 2m/s2. What is the tension on the cord in Newton? . A golf ball is driven horizontally from an elevated tee with a velocity of 80 ft/sec it strikes the fairway 2.5sec later. How far has it traveled horizontally? . A ball is thrown vertically upward from the ground and a student gazing out of the window sees it moving upward pass him at Sm/s. The window is 10m above the ground. How high does the ball go above the ground? . An automobile moving at a constant velocity of 1 5m/s passes a gasoline station. Two seconds later, another automobile leaves the gasoline station and accelerates at a constant rate of 2m/s2. How soon will the second automobile overtake the first? A homogenous ladder 18ft long and weighing 1201bs rests against a smooth wall. The angle between it and the floor is 700. The coefficient of friction between the floor and the ladder is 0.25. How far up the ladder can a 180Ibs man walk before the ladder slips? . A car travels 30km east and then 40km north, or a total distance of 70km in a time of one hour. What is the average speed? What is the average velocity? . A stone is dropped from a cliff into the ocean. The sound of the impact of the stone on the ocean surface is heard 6.5sec after it is dropped. The velocity of sound is 340m/sec. How high is the cliff? A man who can throw a stone with a velocity of 25m/sec wishes to hit a target T placed on his own level at a distance of 30m. Neglecting the effects of air resistance, at what angle to the horizontal should he throw the stone? . A cyclist on a circular track of radius r=800ft is travelling at 27ft/sec. His speed in the tangential direction increascs at the rate of 3ft/s2. What is the cyclist's total acceleration in ft/s2? 10. Suppose that the voltmeter reads 12 V and the ammeter shows 50mA. What is the power dissipated by the potentiometer