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lisabon 2012 [21]
3 years ago
11

You drop a rock from rest from the top of a tall building.1)how far has the rock fallen in 2.60 s?

Physics
1 answer:
Bess [88]3 years ago
7 0
Answer:
distance = 33.124 meters

Explanation:
To solve this question, we will use one of the equations of motion which is:
s = ut + 0.5a * t^2
where:
s is the distance that we want to get
u is the initial velocity = 0
a is the acceleration due to gravity = 9.8 m/sec^2
t is the time = 2.6 sec

Substitute with the givens in the equation to get the distance as follows:
s = ut + 0.5a * t^2
s = (0)(2.6) + 0.5(9.8)(2.6)^2
s = 33.124 meters

Hope this helps :)
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Answer:

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Answer:

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B)  1.92 KJ

C) 40 ,  2.48

Explanation:

weight of person ( m ) = 79 kg

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F(net) = W + F  = mg ( 1 + \frac{h}{d} )

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B) calculate the force when the stopping distance = 0.345 m

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Answer:

Explanation:

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