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salantis [7]
3 years ago
6

On a distance-versus-time graph, _____.

Physics
1 answer:
babymother [125]3 years ago
3 0

Answer:

A

Explanation:

The slope of the graph has the units of vertical axis divided by horizontal axis. This means that the slope of a distance vs time graph is distance/time, or velocity.

Slope is calculated by "rise over run" so C is incorrect.

Since the slope represents velocity, a constant slope equates to a constant velocity, hence B is incorrect. Same reasoning for D being incorrect: if the slope is zero, the object is not moving.

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Write two different unit in which mass is measured.​
inessss [21]

Answer:

kilograms and grams

Explanation:

kilograms is the stadard unit for mass according to the SI system.

Grams is another unit for mass.

5 0
3 years ago
A race car goes from a complete stop at the start line to 150 miles per hour in 5 seconds. What is its acceleration? Show your w
qwelly [4]

Answer:

Explanation:

150/5  = 30

30mph per 1 second

3 0
3 years ago
If the moon did not rotate at the same rate that it revolved, what would happen to the gravity of the earth?
dem82 [27]

Answer:

The gravity, which is an acceleration to the center of the earth, will be the same.

Explanation:

The gravity on earth depends only on the masses and distance, between two objects. We can see it in the gravitational force equation.  

F=G\frac{m\cdot M}{r^{2}}  

Now if we put a man, with mass m, on the surface of the earth, with mass M, the distance from the center of mass and the man will be R (earth radius). Knowing that F = m*a, we can find the accelerations due to this mass M and this value will be 9.81 m/s².  

On the other hand, the moon has a gravity value and is less than the earth, because its mass, and affects the water sea due to the gravitational force between earth and moon. If the moon changes the rate of its rotate it changes probably the distance between them, let's recall they must conserve angular momentum, but the gravity won't be affected.

Therefore, the gravity, which is an acceleration to the center of the earth, will be the same.

   

I hope it helps you!

5 0
3 years ago
A wire carries a 2a current. what is the current in a second wire that delivers twice as much charge in the same amount of time?
Soloha48 [4]

Answer:

4A

Explanation:

Current is charge per time.  So if the second wire delivers twice as much charge in the same amount of time, it must have twice the current.

2 × 2A = 4A

7 0
3 years ago
According to kinetic molecular theory, which statement best describes collisions between gas particles?
Mkey [24]
A they are elastic.
being in random motion means they're not predictable. 
being elastic, they don't stick together
5 0
3 years ago
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