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sergey [27]
3 years ago
15

Which of the following statements is accurate?

Physics
2 answers:
Volgvan3 years ago
8 0

Answer: B. If an object's velocity is changing,it's either experiencing acceleration or deceleration.


Acceleration is defined as the rate at which an object changes its velocity. This implies that if an object is changing it's velocity it is experiencing acceleration/ deceleration.

Acceleration is a vector quantity that has both a magnitude and time.

It is represented as

Acceleration= change in velocity/time.

The SI unit for acceleration is m/s^2

Reptile [31]3 years ago
7 0

your answer is B. If an object's velocity is changing, it's either experiencing acceleration or deceleration.

i just took the test


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Two forces of 83 pounds and 56 pounds act simultaneously on an object. The resultant forms an angle of 52° with the 56-pound for
Nikitich [7]

Answer:

95.9°

Explanation:

The diagram illustrating the action of the two forces on the object is given in the attached photo.

Using sine rule a/SineA = b/SineB, we can obtain the value of B° as shown in the attached photo as follow:

a/SineA = b/SineB,

83/Sine52 = 56/SineB

Cross multiply to express in linear form

83 x SineB = 56 x Sine52

Divide both side by 83

SineB = (56 x Sine52)/83

SineB = 0.5317

B = Sine^-1(0.5317)

B = 32.1°

Now, we can obtain the angle θ, between the two forces as shown in the attached photo as follow:

52° + B° + θ = 180° ( sum of angles in a triangle)

52° + 32.1° + θ = 180°

Collect like terms

θ = 180° - 52° - 32.1°

θ = 95.9°

Therefore, the angle between the two forces is 95.9°

3 0
3 years ago
A. If you set a cannonball to 1500 m/s, what happens? Explain why you think it moves this way.
creativ13 [48]

Answer:

I beleive it would shoot very far up into the sky

Explanation:

7 0
4 years ago
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According to the law of conservation of energy, when a lawnmower uses 750 J of chemical energy from gasoline, how much of this e
steposvetlana [31]
Energy is neither created nor destroyed

E in = E out
750 J in so 750 J out
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What do you ocean waves and sound waves have in common?
maw [93]

Answer:

They are both mechanical waves

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when a traffic accident is investigated, it is common for the length of the skid marks to be measured. how could this informatio
Dvinal [7]

This information could be used in the following ways: the braking distance of a skidding car will depend on its initial speed and the coefficient of kinetic friction.

Thus, if the coefficient of friction is known the initial speed can be determined from the length of the skid marks.

What do you mean by Initial speed?

Initial speed can be described as  how fast an object travels when gravity first applies force on the object. It can be represented in the form of (u) and is generally measured in metres per second (m/s).

It can be represented in three ways.

  • v2=u2+2as
  • v=u+at
  • s=ut+0.5at2

Through these formulas we can calculate the initial speed of any object. It helps in understanding various velocities, time principles.

To know more about initial speed from the given link

brainly.com/question/26116359

#SPJ4

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