Impulse and Momentum Ranking Task Six automobiles are initially traveling at the
ID: 2193220 • Letter: I
Question
Impulse and Momentum Ranking Task Six automobiles are initially traveling at the indicated velocities. The automobiles have different masses and velocities. The drivers step on the brakes and all automobiles are brought to rest. Red Car: 1000kg, 10m/s Green Car: 500kg, 10m/s Yellow Car: 2,000kg, 5m/s Blue Car: 500kg, 20m/s Purple Car: 4,000kg, 5m/s Light Blue Car: 1,000kg, 20m/s Part A Rank these automobiles based on the magnitude of their momentum before the brakes are applied, from largest to smallest. Rank from largest to smallest. To rank items as equivalent, overlap them. Part B Rank these automobiles based on the magnitude of the impulse needed to stop them, from largest to smallest. Rank from largest to smallest. To rank items as equivalent, overlap them. Part C Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. Rank from largest to smallest. To rank items as equivalent, overlap them.Explanation / Answer
Automobile 1: 500kg, 10m/s ? p = 5 000 kg·m/s Automobile 2: 2000kg, 5m/s ? p = 10 000 kg·m/s Automobile 3: 500kg, 20m/s ? p = 10 000 kg·m/s Automobile 4: 1000kg, 20m/s ? p = 20 000 kg·m/s Automobile 5: 1000kg, 10m/s ? p = 10 000 kg·m/s Automobile 6: 4000kg, 5m/s ? p = 20 000 kg·m/s A: 6,4 (tied); 5,3,2 (tied); 1 B: Same. Impulse = change in momentum. C: We can't say anything about the forces required until we know about the timeframes required for each one to stop. If they all stopped in the same time interval, then the rankings are the same.