Use the exact values you entered in previous answer(s) to make later cakulation(

Question

Use the exact values you entered in previous answer(s) to make later cakulation(s). Two hockey pucks approach each other as shown in the figure below. Puck 1 has an inital speed of 19 m/s, and puck 2 has an initial speed of 14 m/s. They collide and some glue on one of the pucks causes them to stick together. (Assume the pucks have the same mass.) Puck 1 Puck 2 (a) If the two pucks form a "system," is the momentum of this system along x or y conserved? Yes O No (b) Find the components along x and y of the initial velocities of both pucks puck 1 x component 16.45 puck 1 y component 9.5 puck 2 x component puck 2 y component 14 M/s m/s m/s m/s (c Express the conservation o momentum cond on or motion along and y Let v1 and Vly be the ? and y components o the initia veloaty or puck 1 V2 and V2 be the x and y components of the initia velocity or puck 2, and v and y the x and y components for the final velocity.) iV2x8.225 (d) Is this collision elastic or inelastic? elastic collision inelastic collision (e) Find the final velocity of the two pucks after the collision. magnitude 8.53 direction m/s ?counterclockwise from the +x-axis 15.3 (f) What frection of the initial kinetic energy is lost in the collision? initial kinetic - final kinetic e - 0.75 initial kinetic energy

Explanation / Answer

let,

mass of the puck1 is m1=m

initial speed of m1 is v1=19 m/sec

mass of the puck2 is m2=m

initial speed of m2 is v2=14 m/sec

c)

V1ix + V2ix = v1*cos(30) + 0

V1ix + V2ix = 19*cos(30) = 16.45 m/sec

and

V1iy + V2iy = -v1*sin(30) + v2

V1iy + V2iy = -19*sin(30)+14 = 4.5 m/sec

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