Motion 2 problems -- Tossing hay bales and baseballs
Homework Statement
1. A hay-baling machine throws each finished bundle of hay 2.0 m up in the air so it can land on a trailer waiting 4.7 m behind the machine.
(a) What must be the speed with which the bundles are launched?
2. A...
Projectile Motion -- baseball popup
Homework Statement
A baseball is popped up, remaining aloft for 6.3 s before being caught at a horizontal distance of 83 m from the starting point. What was the launch angle?
Homework Equations
vx = vcostheta
vy = vcostheta
The Attempt at a...
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I read this article: http://www.sciencenews.org/view/generic/id/338500/title/Crystals_may_be_possible_in_time_as_well_as_space
What dimensions is the article talking about? Doesn't everything have a fourth dimension, time?
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