Reference no: EM132599523

1) The three finalist in a contest are brought to the center of a large flat field. Calculate the following displacements:

72.4 m, 32o east of south
57.3 m, 36o south of west
17.8 m straight south

Calculate the magnitude and direction of the resultant.

2) A batter hits a baseball so that it leaves the bat at speed of 37 minute per second at an angle of 53.1o.

Calculate:

a.) The position of the ball and the magnitude and the direction of its velocity at t = 2 sec.
b.) The time needed for ball to reach its maximum height and its height at this point.
c.)The horizontal range, the horizontal distance from the starting point to where the ball hits the ground.

3) A load of 50 kg is applied to the lower end of a steel rod 80 cm long and 0.6 cm in radius. How much will the rod stretch? Y = 180 GPa for steel.

4) A force of 4.8 N acts through a distance of 18 m in the direction of the force. Find the work done.