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alexgriva [62]
3 years ago
6

what would happen to someone standing on the sidewalk at the bottom of the Empire State Building that is struck by a penny throw

n from the observatory at the top?
Physics
2 answers:
Dmitry_Shevchenko [17]3 years ago
6 0

Explanation:

throwing a penny off the empire State building wouldn't it kill someone, the penny only weighs about a gram and it tumbles as it falls, a gram of weight traveling at a revel Tilly slow speed might hurt a little if it hit you up the head but it's definitely not going to kill you.

Dmitry_Shevchenko [17]3 years ago
6 0

Answer:

Throwing a penny off the Empire State Building wouldn't kill someone. A penny only weighs about a gram and it tumbles as it falls. Because of the tumbling and the lightweight, there's so much air resistance that the penny never really gathers that much speed before it hits its terminal velocity. A gram of weight traveling at a relatively slow speed might hurt a little if it hit you on the head, but it's not going to kill you.

Explanation:

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3 years ago
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A golfer strikes her tee shot with the following velocities, vx = 106 m/s &amp; vy = 66.2 m/s. a. What is the velocity of flight
lara [203]

Answer:

a) V ≈ 125 m/s;  b) Δt = 13.24 s;  c) ΔS ≈ 1450 m

Explanation:

a) We have just to calculate the vector resultant.

V² = 106² + 66.2²

V² = 15618.44

V ≈ 125 m/s

b) The time of flight is equal to the time to reach the maximum height summed to the time to reach the land.

In vertical:

V = V₀ + a * t

V = 66.2 - g * t

0 = 66.2 - 9.8 * t

t ≈ 6.76 s

So: Δt = 13.24 s

c) In horizontal:

V = ΔS / Δt

106 = ΔS / 13.52  ⇒  ΔS = 106 * 13.52

ΔS = 106 * 13.52

ΔS = 1433,12

ΔS ≈ 1450 m

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A 2.44 kg block is pushed 1.55 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle o
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Answer:

The work done is L= 49.83 Joules

Explanation:

m= 2.44kg

d= 1.55m

α= 69.6°

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F= ?

Fy= F*sin(α)

Fx= F*cos(α)

Fr= μ * Fx

Fr= μ * F*cos(α)

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