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Vsevolod [243]
3 years ago
8

An object is moving along a straight line. The graph shows the velocity of the object over

Physics
2 answers:
iren [92.7K]3 years ago
8 0

Answer:

From 9 to 10 sec the velocity is decreasing at a constant rate.

Change in V = 20 m/s - 30 m/s = -10 m/s

Since acceleration is constant from point E to point F (straight line)

and t = 9.5 sec is on this line

a = (20 m/s - 30 m/s) / 1 sec = -10 m/s^2  

IRISSAK [1]3 years ago
4 0

Answer:

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Explanation:

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Prečo je omnoho ľahšie udržať sa na hladine vody v mori ako v rieke
Vika [28.1K]

Answer:

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6 0
3 years ago
To determine power, it is necessary to know the A. energy required and the time it takes. B. amount of work and the distance cov
Y_Kistochka [10]
The answer for this would be A. since power is Joules/seconds and energy is rated in Joules
5 0
4 years ago
Read 2 more answers
In order to calculate momentum we must have the object's (2 points)
frozen [14]
Mass and velocity of course
5 0
4 years ago
What effect do impurities have on the crystal lattice? Why does that result in the lowering of the melting point of a solid?
s344n2d4d5 [400]

Answer:

It reduces the melting point due to a defect in the arrangement of the crystal lattice.

Explanation:

The presence of impurities creates a disorderliness in the uniformity of the crystal structure. It lowers the melting point by a few degrees because it becomes easier to overcome the intermolecular force of attraction.

It makes the array of crystals disordered.  

Lattice is a long chain three-dimensional arrangement of the molecules, atoms or ions in a crystal structure.

3 0
4 years ago
Look at the attached photo:
pshichka [43]

Answer:

C) Mass of the ball

Explanation:

Independent variable is the variable the researcher changes.

Since Martin is testing the mass of the ball, he'll be using different balls and that is the only thing he changes.

The distance traveled by the ball is the dependent variable since it depends on the mass of the ball.

The height and length of the ramp are the constant variables since that's the only ones that remain the same throughout this experiment.

7 0
3 years ago
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