Question

Question 16 This question contains multiple parts. Make sure to read all the instructions and answer each part. A 20 kg child is sliding at 3 m/s across a frictionless frozen pond at -45 degrees relative to the x-axis, straight towards a dangerous hole in the ice. A physics professor is out for a stroll when she spots the child in peril and heroically launches herself across the ice at +30 degrees relative to the x-axis to intercept the child. Image size: s ML Max Part a (1 points) If the physics professor weighs 73.2 kg and launches herself across the ice with a velocity of 5 m/s. What is the magnitude of the velocity of the duo after the professor has grabbed the child? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, 2, 106, 5.23e-8 Enter answer here 3.31 m/s

Answer 1

m = 20 kg maa 73.2 kg 45 v = 3mis V₂ = smis Momentum conservation Principle :- m, vi cosu5 tmz Vzcos3o = mitroz) ux x-axis -) Vy = 3.856 mis Yaxis m. v2 sin 30-mi visinusam, amar (a) - vy a 10516 mis W = {ve ² + vy? + 13.856)2+(1516) ? mie - 4.143 misi (b) (b) tam a tam or vy 1516 as oa dant (3.856) >> O = 21.5° Canticlockwise from +x ax is)