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Andrew [12]
3 years ago
8

When the pumpkin is shot straight upward with an initial speed of 14 m/s , what is the maximum height above its initial equation

Physics
1 answer:
Dmitrij [34]3 years ago
8 0

Answer:

10 m

Explanation:

At the maximum height, the velocity is 0.

Given:

v₀ = 14 m/s

v = 0 m/s

a = -9.8 m/s²

Find: Δy

v² = v₀² + 2aΔy

(0 m/s)² = (14 m/s)² + 2 (-9.8 m/s²) Δy

Δy = 10 m

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9,000/12=750

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3 years ago
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malfutka [58]

4days and 12hours

Explanation:

Given parameters:

Average speed  = 15m/s

Distance = 1800 miles

Unknown:

Number of days = ?

Solution:

Speed is the rate of change of distance with time;

          Speed = \frac{distance}{time}

Since the unknown is number of days, it is a measure of time:

    Time = \frac{distance }{speed}

The distance from California to Lansing is 1800miles. The journey takes the truck drivers to and fro. It is a two way trip;

 Total distance = 1800 miles x 2 = 3600miles

We need to convert miles to meters since that is the unit we can conveniently work with;

            1 mile = 1609.34m

          3600 miles =  3600 x 1609.34

                              = 5793638m

Inputting the values in the equation:

          Time = \frac{ 5793638}{15} = 386242.53s

Now we need to convert to day;

In a day, = 60 x 60 x 24 = 86,400s

                 1 day = 86400s

 Therefore;

  The number of days = \frac{386242.53}{86400} = 4.47days

This implies that it will take them 4 days and approximately 12 hours.

learn more:

speed brainly.com/question/10048445

#learnwithBrainly

7 0
3 years ago
A peregrine falcon flies at 50 m/s for 7 s. How far does it fly?
masha68 [24]

Answer: 70 x 5 = 350 m

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3 years ago
When the sound of source is moving away from the observer the observer will hear a
hammer [34]

a sound of lower fequency

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3 years ago
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A conducting sphere has a net charge of -4.8x10-17 C. What is the approximate number of excess electrons on the sphere?
Aloiza [94]

Answer:

The number is  N  = 300

Explanation:

From the question we are told that

   The  net charge is  Q =  -4.8 *10^{-17 } \  C

Generally the charge on a electron is e = - 1.60 *10^{-19 } \ C

Generally the number of excess electrons is mathematically represented as

      N  =  \frac{Q}{e}

=>  N  =  \frac{-4.8 *10^{-17}}{-1.60 *10^{-19}}

=>  N  = 300

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3 years ago
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