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anzhelika [568]
3 years ago
5

An apple falls out of a tree and takes 1.75 seconds to strike the ground.what was the velocity of the apple when it hit the grou

nd
Physics
2 answers:
goblinko [34]3 years ago
5 0
Assuming acceleration is 10
let the final velocity be x
(x-0) /1.75= 10 where 0 is initial velocity at its highest point
x= 17.5m/s
ioda3 years ago
3 0

Answer:

v_f=17.15\frac{m}{s}

Explanation:

The apple is in free fall, therefore we can use the kinematic equations, especifically the which one that relate final speed to acceleration of gravity and time:

g=\frac{v_f-v_o}{t}

The initial speed is zero, since falls out of the tree and recall that g=9.8\frac{m}{s^2}. So, Rewriting for final speed:

v_f=gt\\v_f=(9.8\frac{m}{s^2})(1.75s)\\v_f=17.15\frac{m}{s}

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yulyashka [42]

Answer:54.70 N

Explanation:

Given

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Gauge Pressure P=\rho gh

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P_{gauge}=1000\times 9.8\times 0.625=5.937 kPa

Force creates a pressure of P_1 which will be equal to Gauge Pressure

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P_1=P_{gauge}

\frac{F}{A}=5.937 kPa

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6 0
3 years ago
A ship sets sail from Rotterdam, The Netherlands, heading due north at 8.00 m/s relative to the water. The local ocean current i
Nuetrik [128]

Answer:

The velocity of the ship relative to the earth V = 9.05 \frac{m}{s}

Explanation:

The local ocean current is  = 1.52 m/s

Direction \theta = 40°

Velocity component in X - direction V_{x} = 1.52 \cos 40°

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Velocity component in Y - direction V_{y} = 8 + 1.52 \sin 40°

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The velocity of the ship relative to the earth

V = \sqrt{V_{x}^{2} + V_{y} ^{2}  }

Put the values of V_{x} and V_{y} we get,

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Explanation:

1. Force applied on an object is given by :

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m=\dfrac{160\ lb}{32\ ft/s^2}

m = 5 kg

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