Question

1D Motion Begin Date: 1/13/201 AM-D Doe Dates 00 PM End Date: /10/2019 11 59.00 PM 110%) Problem le There am two arms. The first item istossed upward with initial velocity v.-3.5m/s at h-/3 m above the pound. Aher 5 s, the other iem istossed dowaward with initial velocity of -n from the same height. Both of the items move until they hit the ground .v 8% Part (a) Defining the positive direction going upward, what is the acceleration of these two items in me, 4 5 6 1 23 ODegrees Radians ▲ 8% Part (b) What is the displacement of these two items in meters? ▲ 8% Part (d) Cakulate the numerical value of var in m s. ▲ 8% Part 8% Part (c) Express the final velocity of the first itemMp just as it hits the ground, inter-ofvi. Ay,and a. 8% Part (e) Express the final velocity of the second item. van just as it hits to ground, n ems on. ay, and a Calculate the numerical value of vain mk % Part (g) Express an equation relating vir ia lerms of rg, accerdag to the above calculation. ▲8% Part (h) Express the time internal dat the frst tem is in the air. Δりinsemmofn.nt, and a. 8% Part (1) Calulate the numerical value of Δ, in seconds. ii ▲ 8% Pamu) Express the time interval ofthe second item's motion. A,2, in terms of a, and a. ii - S% Part (k) Calculate the numerical value ofai in seconds. 8% Part (I) Calculate the difference Ati-Alg in soconds. 8% Part (m) Based on the above calculation, which item h" the pound first-the first or the second 3 6

Answer 1

by analysis of equation of motion we can easily solved each part as follows