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daser333 [38]
2 years ago
10

A hockey puck slides off the edge of a table with an initial velocity of 20 m/s. The height of the table above the ground is 2.0

m. What is the acceleration of the puck just before it touches the ground
Physics
1 answer:
aivan3 [116]2 years ago
6 0
Without air resistance, every falling object has 9.8 m/s² of acceleration,
from the instant it starts falling until it hits the bottom.

None of these things makes any difference:

-- whether you throw the object up, throw it down, or just drop it
-- any horizontal speed it has
-- how much mass the object has
-- how heavy it is
-- what color the object is
-- how far it falls
-- how long it takes.

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2 years ago
D section a only still need help on this
SIZIF [17.4K]

Acceleration means speeding up, slowing down, or changing direction. The graph doesn't show anything about direction, so we just have to examine it for speeding up or slowing down ... any change of speed.

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Sections a, c, and d are all going up or down. Section b is the only one where speed is not changing. So we can't be sure about b, because we don't know if the track may be curving ... the graph can't tell us that. But a, c, and d are DEFINITELY showing acceleration.

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3 years ago
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seropon [69]

Answer:

Explanation:

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Work = F x d

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