Question

Screenshot_20191023-192051.... Screenshot_20191023-192051.png 6 4 61% 7:20 PM 6.4 A 0.16 kg billiard ball bounces elastically off of the cushion of the billiard table as shown in Figure 6.6. 0.80 m 30° - * O 0.80 ms Figure 6.6 a. What is the change in velocity of the billiard ball? b. What is the change in momentum of the billiard ball? c. If the ball was in contact with the cushion for just 0.050 s, what is the average force exerted on the ball by the cushion? 6.5 A 10 000 kg train carriage (carriage A) is rolling along a level track in the positive x-direction direction at a

Answer 1

a) iniHal velociy in x daivecdion -(0.8o M cos 30 final vilocity in x divection Vx =+(0.80 mc) cos 30° Chonge in vels city in x divection C- o.80m Co 30 o 80msCo 30 6 ms Cor 30 iniHal velocity in y direchion 0.80 Ms1sin 30 AUiy final velocity in y divection AVty o.g0 ms-sin80 change in velb city in y. direction Change in velo city of billiard bual AV=JAVAV 6 ms co30 x directon AV = 39 m/s in momendum Change Ap 6.16 x 39mls mAV 0.2224 mIs Ap - C. Aeroge force , F = AP At O.222 mls 4.448 N F