Find the height from which the rock was launched

Reference no: EM132100936

Question: 1. A rock thrown with speed 11.5m/s and launch angle 30.0 degrees (above the horizontal) travels a horizontal distance of d = 15.5m before hitting the ground. From what height was the rock thrown? Use the value g = 9.810m/s2 for the free-fall acceleration.

Part C) Find the height yi from which the rock was launched.

Part D) A second rock is thrown straight upward with a speed 5.750m/s . If this rock takes 1.556s to fall to the ground, from what height H was it released?

2. A relief airplane is delivering a food package to a group of people stranded on a very small island. The island is too small for the plane to land on, and the only way to deliver the package is by dropping it. The airplane flies horizontally with constant speed of 322km/hour at an altitude of 775m . The positive x and y directions are defined in the figure. For all parts, assume that the "island" refers to the point at a distance D from the point at which the package is released, as shown in the figure. Ignore the height of this point above sea level. Assume that the acceleration due to gravity is g = 9.80m/s2 .

Part A) After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? Assume that the package, like the plane, has an initial velocity of 322km/hour in the horizontal direction.

Part B) If the package is to land right on the island, at what horizontal distance D from the plane to the island should the package be released? Express the distance numerically in meters.

Part C) What is the speed vf of the package when it hits the ground? Express your answer numerically in meters per second.

Reference no: EM132100936

Questions Cloud

What is the magnitude of the induced current : The 10-cm-wide, zero-resistance slide wire shown in the figure is pushed toward the 2.0 Omega resistor at a steady speed of 0.50 m/s.

Write a function called highestpay that takes an array : Write a function called highestPay that takes an array of Employees like the one above and prints out the name of the employee with the highest salary.

Calculate the project adjusted present value : If the ?rm's tax rate is 34%, calculate the project's adjusted present value (APV)

Devaluation of the nominal exchange rate : How the effects of a devaluation of the nominal exchange rate with the monetary approach in a fixed exchange rate regime compare with effect in the IS-LM

Find the height from which the rock was launched : A rock thrown with speed 11.5m/s and launch angle 30.0 degrees (above the horizontal) travels a horizontal distance of d = 15.5m before hitting the ground.

Write a program that calls a function calculatesum : Write a program that calls a function calculateSum to calculate the sum of Nintegers.

Draw a line on the graph representing total energy of ball : A 1.00 kg ball is thrown directly upward with an initial speed of 16.0 m/s. A graph of the ball's gravitational potential energy vs. height, Ug(h).

Five basic skills your customer service representative : "Five Basic Skills Your Customer Service Representative Cannot Live Without."

Appeal involves claim for workmen compensation benefits : This appeal involves a claim for workmen’s compensation benefits for the period during which the claimant was incapacitated by severe depression caused

User Account

All Pages