What is the velocity of the gold pack after the collision

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Q. To qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on a track with a total length of 1600 m. If a particular car covers the first half of the track at an average speed of 210 km/h, what minimum average speed must it have in the second half of the event in order to qualify?

Q. A gold puck has a mass of 12 kg and a velocity of 5i-4j m/s prior to a collision with a stationary blue puck whose mass is 18 kg. After the collision ,the blue puck has a velocity of 2i-2j. What is the velocity of the gold pack after the collision?

Reference no: EM1359687

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