Assignment 2 1- Two cannons are mounted on a high cliff. Cannon A fires balls wi
ID: 1323566 • Letter: A
Question
Assignment 2
1- Two cannons are mounted on a high cliff. Cannon A fires balls with twice the initial velocity of cannon B. Both cannons are aimed horizontally and fired. How does the horizontal range of cannon A compare to that of cannon B?
The range for both balls will be the same
b) The range of the cannon ball B is about 0.7 times that of cannon ball A.
c) The range of the cannon ball B is about 1.4 times that of cannon ball A.
d) The range of the cannon ball B is about twice that of cannon ball A.
e) The range of the cannon ball B is about one-half that of cannon ball A.
2- Which one of the following statements concerning the range of a football is true if the football is kicked at an angle q with an initial speed v0?
a) The range is independent of initial speed v0.
b) The range is only dependent on the initial speed v0.
c) The range is independent of the angle q.
d) The range is only dependent on the angle q.
e) The range is dependent on both the initial speed v0 and the angle q.
3- A bullet is aimed at a target on the wall a distance L away from the firing position. Because of gravity, the bullet strikes the wall a distance ?y below the mark as suggested in the figure. Note: The drawing is not to scale. If the distance L was half as large, and the bullet had the same initial velocity, how would ?y be affected?
a) ?y will double.
b) ?y will be half as large.
c) ?y will be one fourth as large.
d) ?y will be four times larger.
e) It is not possible to determine unless numerical values are given for the distances
4- An eagle takes off from a tree branch on the side of a mountain and flies due west for 225 m in 19 s. Spying a mouse on the ground to the west, the eagle dives 441 m at an angle of 65
Explanation / Answer
1. E
2. E
3.C
4.C
5.A
6.B
7.A
8.B