Question

Problem Statement A person throws a dart 30° above horizontal with initial speed 16 m/s. The dart hits a tree 7.0 m away. a) How long was the dart in the air? b) How high is the dart in the tree relative to the dart's initial thrown height? Visual Representation • Draw a sketch showing important points in the motion Establish a coordinate system and define symbols • Draw a motion diagram • List knowns and desired unknowns . Sketch Knowns Motion Diagram Unknowns . Mathematical Representation Identify and write down the relevant equation(s), using the symbols defined in your sketch Solve equation(s) for the desired unknown • Substitute in the known values, including units, and calculate unknown value Check units and assess if your answer is reasonable .

Answer 1

Please see image and try to understand thanks

Vo 30 x Here known quantity sure initial projection projection angle 0:30 ürihil projection belocity voalcony X=7.0 legknown here unknown is time of flight per and how we use some motonea"? So gy Ve So we can see Vosmo ax=0 and ayang Vicou for Horizontal Fair X Vo caso alt=0.505 see - &- Ulat + Oxt? 5)2 = Vocas o xt = t- for verticle 16 cas 30 ya Uy + 2 ayt? => y = Vofmuxtar 942-2 9 = 16 in 36 XO1505 9.8*10.505) 2 = 19=2.79 M/A