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,
I
,
Optional Problems dealing with constant acceleration
(Not to be handed
in.)
(The first 3 are taken from the textbook by Halliday and Resnick)
1. Electrons, like all forms
of matter,
fall
under the influence of gravity.
If
an electron is
projected horizontally with a speed of 3 x 10
7
mls (onetenth the speed of light), how far
will it fall in traversing a horizontal distance of 1.0 m?
2 A plane, diving at an angle of 53 degrees from vertical, releases a projectile at an
altitude of 730
m
The projectile hits the ground 5.0 s after being released. (a) Whatis
the speed of the plane? (b) How far did the projectile travel horizontally during its flight?
(c) What were the horizontal and vertical components of the velocity just before striking
the ground?
.
3.
In a detective story, a body is found 15
ft
from the base
of a building and beneath an
open window 80 ft above. Would you guess the death to be accidental or not? Why?
4. (from Prof. Ritchie Patterson) You are a spy with the Rongovian Secret Service, and
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 Fall '05
 ELSER, V
 Acceleration, Gravity

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