Mechanics | Relativity Answers

Two students are on a balcony 18.4m above the street. One student throws a ball vertically downward at 15.3 m/s. what is the velocity of the ball as it strikes the ground?

The palm springs aerial tramway extends 3.88 km from the valley station, which is located 0.8 km above sea level, to the mountain station atop san jacinto peak. the actual path of the tramway's cables is not along a straight line, but if it were, the horizontal displacement of the tramway would be 3.45 km. how far is san jacinto peak above sea level/

Before the widespread use of steamships, sailing from europe to noth america was accomplished by use of the trade winds. tha trade winds move from the northeast to the southeast between30 degrees and 60 degrees latitude in the northern hemisphere. a sailing ship from europe to the caribbean sea would first travel southward to the canary islands, off the coast of north africa, and then use the trade winds to sail west. suppose a ship travels south from iceland to the canary islands, and then west to florida. the ship's total displacement is 7400 km at 26 degrees south of west. if the ship sails 3200 km south from iceland to the canary islands, how large is the western component of its journey?

the straightest stretch of railroad tracks in the world extends for 478 km in southwestern Australia. A train traveling along these tracks is displaced to the south by about 42 km. what is the trains displacement to the west? what is the direction of the total displacement?

a helicopter flies 165 m horizontally and then moves downward to land 45 m below. What is the helicopter's resultant displacement

If the rectangular coordinates of a point are given by (6, y), and its polar coordinates are (r, 22°), determine the value of y and r.

I really need a huge help for this physics homework.. please can you answer this for me ? Thank you so much . the problem runs this way:

A 40 kilogram mass is pulled by a 80 newton force which is 30 degrees from the horizontal along a level floor. What is the work done by the 80 newton force after travelling 15 meters?

At noon a ship S1 is 20 miles north of a ship S2. If S1 is sailing south at a rate of 6 miles per hour and S2 is sailing east at a rate of 8 miles per hour, find the time when they are nearest together.

a car with its engine running and in forward gear goes up a hill and then down on the other side. What forces cause it to move upward? Downward?

a vertical container with base area measuring 14.0 cm by 17.0 cm is being filled with identical pieces of candy,each with a volume of 50.0 millimeter cube and mass of 0.0200 g assume that the volume of the empty spaces between the candies negligible. if the height of candies in the container increases at the rate of 0.250 cm/s at what rate kilograms per minute does the mass of the candies in the container increases?