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jonny [76]
2 years ago
14

How many calories would you take in if you ate the whole box of crackers in one sitting ?

Physics
1 answer:
sweet [91]2 years ago
7 0

Answer:

i'm pretty sure it's 81 calories

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This diagram shows particles that make up an atom. Which label BEST completes the diagram ?
worty [1.4K]
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8 0
3 years ago
A Neglecting air resistance, a ball projected straight upward so it remains in the air for 10 seconds needs an initial speed of
ololo11 [35]

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(C) is correct option.

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Time = 10 sec

For first half,

We need to calculate the height

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v^2=u^2+2gh

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For second half,

We need to calculate the time

Using equation of motion

h =ut+\dfrac{1}{2}gt_{2}^2

h=0+\dfrac{1}{2}gt_{2}^2

t_{2}=\sqrt{\dfrac{2h}{g}}

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t_{2}=\sqrt{\dfrac{2\times v^2}{g^2}}

t_{2}=\dfrac{v}{g}

According to question,

t_{1}+t_{2}=10

t_{1}=t_{2}

Put the value of t₁ and t₂

\dfrac{v}{g}+\dfrac{v}{g}=10

\dfrac{2v}{g}=10

v=\dfrac{10\times g}{2}

Here, g = 10

The initial velocity is

v=\dfrac{10\times10}{2}

v=50\ m/s

Hence, The initial velocity is 50 m/s.

3 0
2 years ago
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