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Bumek [7]
3 years ago
14

An elevator moves from rest to 2 m/s over 8 seconds. What is the elevator's acceleration?

Physics
1 answer:
riadik2000 [5.3K]3 years ago
7 0

Answer:

0.25m/s^2

Explanation:

Acceleration= Change in velocity / time

= 2 - 0 / 8

= 2 /8

= 0.25

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An arrow is launched with an initial velocity of 7.6 m/s at an angle of 42 degrees above the horizontal. What is the horizontal
AleksAgata [21]

Explanation:

At any point on the arrow's trajectory, the horizontal component of the velocity is the same. Therefore, the horizontal component of the velocity at the top of its trajectory is

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3 0
3 years ago
Three identical train cars, coupled together, are rolling east at 1.8 m/s . A fourth car traveling east at 4.5 m/s catches up wi
Vedmedyk [2.9K]

Answer:

v = 1.98\ m/s

Explanation:

consider the mass of each train car be m

m₁ = m₂ = m₃ = m

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u₁ = u₂ = u₃ = 1.8 m/s

m₄ = m             u₄ = 4.5 m/s

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using conservation of momentum

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v = \dfrac{9.9}{5}

v = 1.98\ m/s

5 0
3 years ago
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