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ivanzaharov [21]
3 years ago
7

If the velocity of an object changes from 65 m/s to 98 m/s during a time interval of 12 s, what is the acceleration of the objec

t?
A. 2.75 m/s
B. 13.58 m/s
C. 33 m/s
D. 5.42 m/s
Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
7 0

Answer

Find out the what is the acceleration of the object .

To prove

Formula

Acceleration = \frac{Final\ velocity - Intial\ velocity}{Time }

Where

t = the time in which the change occurs

As given

If the velocity of an object changes from 65 m/s to 98 m/s during a time interval of 12 s .

Final velocity = 98 m/s  

Intial velocity = 65 m/s

Time = 12 s

Put in the formula

Acceleration = \frac{98 - 65}{12}

Acceleration = \frac{33}{12}

Acceleration = 2 .75 m/s ²

Option (A) is correct .




emmasim [6.3K]3 years ago
3 0
The question is asking to calculate the acceleration of the object if the velocity of an abject changes from 65 m/s to 98 m/s during a time interval of 12s, and base on my calculation, the possible answer would be letter A. 2.75 m/s. I hope you are satisfied with my answer and feel free to ask for more 
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Makovka662 [10]

Answer:

240 m³

Explanation:

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V=\frac{1}{3}\times B\times H

Where B is the area of the base and H is the height of the pyramid.

Then, the base of the pyramid is a triangle, so the area of a triangle is equal to:

B=\frac{b\times h}{2}

Where b is the base of the triangle and h is the height of the triangle. So, replacing b by 16 m and h by 9 m, we get:

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4 0
1 year ago
It is known that 10% of the calculators shipped from a particular factory are defective. In a random sample of ten calculators,
umka2103 [35]

Answer:

0.7361

Step-by-step explanation:

In this question we have

number to be 10

Then we have a probability of 10% = 0.10

We have q = 1-p

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Then the probability of not more than 1 being defective:

P(x=0) + p(x= 1)

(10C0 x 0.1⁰ x 0.9^10-0)+(10C1 x 0.1¹ x 0.9^10-1)

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= 0.3487 + 0.3874

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This is the the required probability and this answers the question.

probability = 10 percent = 0.1

q= 1- 10percent = 90% = 0.9

n = 4

To get the required probabiltiy for this question is

P(not greater than one is defective )=P(x=0)+P(x=1)

= 4C0x(0.1)⁰x(0.9)⁴+4C1x(0.1)¹x(0.9)³

= 0.9477

The required probability is 0.9477

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Answer:

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notka56 [123]

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