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BartSMP [9]
3 years ago
12

jack be nimble jack be quick jack jumped over the candlestick with a velocity of 5.0 m/s at an angle of 30.0 degrees to horizont

al. did jack burn his feet on the 0.25-m-high candle?
Physics
1 answer:
Mrrafil [7]3 years ago
4 0

Answer:

No

Explanation:

The vertical component of Jack's initial velocity is:

5.0

⋅

sin

30

∘

=

5.0

⋅

1

2

=

2.5

m/s

With gravitational acceleration

9.8

m/s

2

, he will reach the highest point of his trajectory after:

2.5

9.8

≈

0.255

s

The average vertical component of his velocity in that

0.255

s

will be:

1

2

⋅

2.5

=

1.25

m/s

So the highest point of his trajectory will be:

0.255

⋅

1.25

≈

0.32

m

So he will pass approximately

7

cm

above the top of the candle.

The horizontal component of his velocity will be a constant:

5.0

⋅

cos

30

∘

=

5.0

⋅

√

3

2

≈

4.33

m/s

So Jack's trajectory will be substantially longer than it is high and he will spend little time anywhere near above the candle.

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Answer:

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Explanation:

given data

average speed v1 = 0.037 m/s

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to find out

how much tortoise have gone wrt sloth

solution

we find here first tortoise walk that is

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distance d1 =  0.076  × 720

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distance d2 = 26.64 m

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a student standing in an elevator at rest notices that her pendulum has a frequency of oscillation of 0.5 Hz. a. what is the len
EastWind [94]

Answer:

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Explanation:

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