Question
in what direction was the package traveling the instant before it hit ground?
History Bookmarks Tools WindowHelp MasteringPhysics: Homework #4 0 sion.mastering https://session.masteringphysics.com/myct/itemViewrassignme uction:-3% Homework#4 ± Delivering a Package by Air. MC MasteringPhy ± Delivering a Package by Air-MC c.com Getting Start Figure 1) 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 342 kmn/hour at an altitude of 625 m 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 packace is released. as shown in the fiaure. lanore 2.0 CA S Hom ance Ra Figure 1of 1 750 0 10-Year Fix Su Inc 3.750% ed : 2.875% in Part E ed 2.750% $225K Loan $9 Ask MacBook Pro
Explanation / Answer
Vertical velocity when it hits the ground Vy = sqrt(2gh)
= sqrt(2*9.8*625) = 111 m/s
Vx =342 km/h = 342*5/18 m/s= 95 m/s
direction = arctan(Vy/Vx) = arctan(111/95)
= 49.4 degree below horizontal answer
