*b) still 10 m/s/s.c) less than 10 m/s/s.d) not able to be determined.10. Galileo discovered that when two balls with different masses are in free fall something remains the same. What remains the same as the balls fall to earth?a) The distance they fall each second is 10 meters.*b) Their velocities are the same. (are constant.)*c) Their speeds are the same. (are constant.)*d) Their accelerations are the same.Question 10 was poorly stated and I accepted any of the three answers b, c, or d.I intended for d) to be the correct answer.2

11. You shoot an arrow straight up at a rate of 70 m/s. When does reach its highest point?12. How high will the arrow, shot up at 70 m/s, be when it reaches its highest point?13. What is the acceleration of the arrow when it is at the top of its flight?14. Who discovered that Aristotle’s physics of motion did not correctly describe observed motion?a) Newtonb) Halleyc) Copernicus*d) Galileo15. What is the unit of weight in the metric system of measure?16, A Mack truck and a Honda Civic traveling at the same speed collide head-on. The impact force is greatest on the a) Hondab) Mack truck*c) ...is the same for both17. A Mack truck and a Honda Civic traveling at the same speed have a head-on collision. The vehicle to undergo the greatest acceleration will be the *a) Hondab) Mack truckc) ...is the same for both3

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- Spring '13
- Wilson
- Acceleration, Force, Mass