FINALS

1. What is the relevance of Physics in day to day activities?
2. How importance is understanding Physics?
3. If you are traveling in an airplane and dropped a ball where will it hit? why?
4. A large rock is dropped from a bridge into the river below.
a) if the time required to fall is 1.7 seconds, with what velocity, in m/sec, does it hit the water? b) what is the height, in meters, of the bridge above the water?
5. A car possesses 20 000 units of momentum. What would be the car's new momentum if its velocity were doubled.
6. Find the height (in m) from which you would have to drop your textbook so that it would have a speed of 14.2 m/s just before it hits the floor?
7. Differentiate work from power
8. What can make any work be more efficient?
9. If the population of the U.S. was 200,000,000, what was the average rate of energy consumption per person?