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Mumz [18]
3 years ago
12

Suppose you are driving in a convertible with the top down at constant speed. You point a rifle straight upward and fire it. In

the absence of air resistance, would the bullet land
(a) behind you,
(b) ahead of you, or
(c) in the barrel of the rifle?
Physics
1 answer:
lyudmila [28]3 years ago
4 0

Answer:

(c) in the barrel of the rifle

Explanation:

When we are moving in a convertible with constant speed so as per inertia all the objects are moving with same speed as that the speed of convertible.

So here we can say that bullet when shot from the rifle then its speed is same as that of convertible in horizontal direction

So here we can say that if air friction is absent then bullet will move same horizontal distance as the distance moved by you in the convertible

so after it it will reach again at the same position then the displacement of you and bullet is same in horizontal direction so we can say that correct answer will be

(c) in the barrel of the rifle

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In a 2-dimensional coordinate system, which of these is an example of an object's position?
Serjik [45]

' B ' is the only choice on the list that tells you a definite place, where you could go to pick up the object or meet somebody.

But in order to use it, you also have to know where the origin of coordinates is ... the point (0, 0) .

__________

No, I'm wrong about that.  You have to know where SOME other point is, but that doesn't have to be (0, 0).

4 0
3 years ago
A car staring from rest accelerates at 12 m/s^2, what distance did it travel in 7 seconds? (Show work)
Sati [7]
X = v0+ 1/2 a t^2
X= 0+1/2(12 m/s^2 ) ( 7 s)^ 2
X= 6 m/s^2 ( 49 s^2)
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8 0
3 years ago
For the winter, a duck flies 10.0 m/s due south against a gust of wind with a velocity of 2.5 m/s. What is the resultant velocit
maria [59]

Answer:

c. 7.5 m/s south

Explanation:

<u>Given the following data;</u>

Velocity of duck = 10m/s due South

Velocity of wind = 2.5m/s

To find the resultant velocity;

Since we know that the duck is flying against a gust of wind, we would have to subtract the velocity of the gust of wind from that of the duck.

This ultimately implies that, the gust of wind (headwind) would decrease the resulting velocity of the duck because it approaches the duck from the front.

Resultant velocity, /V/ = 10 - 2.5

Resultant velocity, /V/ = 7.5m/s South.

<em>Therefore, the resultant velocity of the duck is 7.5m/s south. </em>

6 0
3 years ago
According to the reading, which of the following is NOT an obstacle to using big data for analysis and decision making? O Poor r
RoseWind [281]

Answer:

B .Limited types of data Insufficient data

Explanation:

To analyse and making decision from big data we have following thing

- Sufficient data

- data analyst

- Accurate data

- data Privacy

- data storage

So, limited data or data that cannot be copied is not and obstacle in data handling. hence option B Limited types of data Insufficient data is correct.

3 0
3 years ago
8.Which set of coefficients would
Viefleur [7K]

Answer:

The set of coefficients that would correctly balanced the equation

NaCl → Na + Cl2   is the option D

(2,2,1)

Explanation:

In this reaction sodium chloride splits into sodium and chlorine.

For balancing the equation we should have number of atom of the element in the left hand side equal to the number of atom of the same element in the right-hand side.

so here in left hand side only one sodium and one chlorine is given and in the right-hand side one sodium and two chlorine is given.

So for the balancing the equation both the side should be same.

So we will write the balanced equation as

2NaCl → 2Na + Cl2

So, right now it is balanced that is two sodium and two chlorine on the left hand side as well as the right hand side.

Hence the coefficients are

2, 2, 1

3 0
3 years ago
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