41 point total

Problem #1- 2 points A moving car has momentum. If it moves twice as fast, its momentum is twice as much.

Problem #1- 2 points A moving car has momentum. If it moves twice as fast, its momentum is twice as much.

Problem #2- 2 points Two cars, one twice as heavy as the other, move down a hill at the same speed. Compared to the lighter car, the momentum of the heavier car is twice as much.

Problem #2- 2 points Two cars, one twice as heavy as the other, move down a hill at the same speed. Compared to the lighter car, the momentum of the heavier car is twice as much.

Problem 3 Each part 3 points each

278.07 kg 403 kg 10 m/sec 6.9 m/sec

322 kg 483 kg 15 m/sec 10 m/sec

598 kg 44.85 kg 2.7 m/sec 36 m/sec

162 kg 486 kg 10.5 m/sec 3.5 m/sec

Problem 4 5 points

Let X = momentum X = mv X = 2 kg X 2.8 m/sec X = 5.6 kg · m/sec

Problem 5 10 points

Let X = momentum X = mv X = 1000 kg X 1 m/sec X = 1000 kg · m/sec

Let X = momentum X = mv X = 70 kg X 8 m/sec X = 560 kg · m/sec

Problem 6 5 points

Let X = momentum X = mv X = 3500 kg X 2.36 m/sec X = 8260 kg · m/sec

Problem 7 5 points

Let X = momentum X = mv X = 66.8 kg X 23.5 m/sec X = 1569.8 kg · m/sec