Football Field: Comparison Between The Displacement And The Distance

1. A football field is 120 yd long and 50 yd wide. What is the area of the football field, in m2, if 1 yd = 91.44 cm? (Points : 5) [pic]5.0 x 103 m2 [pic]2.4 x 103 m2 [pic]4.2 x 103 m2 [pic]3.7 x 103 m2 | |
|2. Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance|
|traveled. (Points : 5) |
| [pic]The displacement is either greater than or equal to the distance traveled. |
| [pic]The displacement can be either greater than, smaller than, or equal to the distance traveled.
|
| [pic]The displacement is either less than or equal to the distance traveled. |

|3. A bullet moving horizontally to the right (+x direction) with a speed of 500 m/s strikes a sandbag and penetrates a distance |
|of 10.0 cm. What is the average acceleration, in m/s2, of the bullet?(Points : 5) |
| [pic]-1.25 x 103
An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s2. How much time does it take for the |
|complete increase in speed? (Points : 5) |
| [pic]17 s |
| [pic]4.0 s |
| [pic]0.058 s |
| [pic]0.25 s |

|5. A bullet is fired horizontally, and at the same instant a second bullet is dropped from the same height. Ignore air