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3 years ago

A car traveling at a constant speed goes around a sharp curve. Is the car accelerating? Explain.

1 answer:

7 0

The answer is: Yes, the car is accelerating because it is changing direction as it goes around the curve.

- Because the direction of motion of an object even if the object is maintaining a constant speed still count as acceleration.

- Acceleration is a change in velocity, either in its magnitude i.e speed or in its direction or both.

- So, In a uniform circular motion, the direction of the velocity changes constantly, So there is always an associated acceleration, even though the speed might be constant.

-So when you go around a sharp curve if you hold the wheel steady during a turn and move at constant speed, you are in uniform circular motion. What you notice is a sideways acceleration because you and the car are changing direction.

You might be interested in

Claire is investigating potential and kinetic energy using a large ball. For her investigation, Claire will stand at the top of

uranmaximum [27]

The ball's potential energy will decrease, and its kinetic energy will increase.

Explanation:

The ball's potential energy will decrease down the slope and its kinetic energy will increase.

Kinetic energy is the energy due to the motion of a body.

K. E = $\frac{1}{2}$ m v²

m is the mass of the ball

v is the velocity of the ball.

Potential energy is the energy due to the motion of a body down slope.

It is expressed as:

P.E = mgh

m is the mass of ball

g is the acceleration due to gravity of the body

h is the height.

We can see as the body drops down the slope, the height diminishes and the velocity increases.

learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

3 0

4 years ago

Analyze the graph below and answer the question that follows.

Yuki888 [10]

C. (-2,-2) is the answer.

<u>Explanation:</u>

When we reflect a point (x, y) across the y-axis, after the reflection, the y-coordinate tends to be the same, however the x-coordinate is changed into its opposite sign.

Here U(2,-2) is reflected across the y-axis then,

the y-coordinate -2 remains the same and the x-coordinate is transformed into its opposite that is the sign of the x-coordinate will be changed as -2.

So the new coordinates of U after reflection will be (-2,-2).

3 0

3 years ago

Read 2 more answers

A metal pellet with a mass of 100.0 g, originally at 116°C, is dropped into a cup of water, initially at

Alina [70]

Answer:

C, 42g

Explanation:

In thermal equilibrium, both bodies (metal pellet and water) both have the same final temperature (46.3°C).

Assuming no heat is lost to surroundings,

the energy lost from metal pellet = energy gained for water

Since E = mc∆T

(energy = mass x specific heat capacity x temperature change)

mc∆T (metal pellet) = mc∆T (water)

100 x 0.568 x (116-46.3) = m 4.184 (46.3 - 23.8)

3958.96 = 94.14m

m = 42g

6 0

3 years ago

QUICK QUESTION: On the Bohr model, how come potassium has 19 electrons in its valence shell if potassium has a K+? Isn’t it supp

Vlada [557]

Answer: K only has 1 valence electron. It will leave with only a little effort, leaving behind a positively charged K^+1 atom.

Explanation: A neutral potassium atom has 19 total electrons. But only 1 of them is in potassium's valence shell. Valence shell means the outermost s and p orbitals. Potasium's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1. The 4s orbital is the only orbital in the 4th energy level. So it has a valency of 1. This means this electron will be the most likely to leave, since it is the lone electron in the oyutermost energy level (4). When that electron leaves, the charge on the atom go up by 1. The atom now has a full valence shell of 3s^2 3p^6, the same as argon, Ar.

4 0

3 years ago

In what era did reptiles become increasingly dominant?

emmainna [20.7K]

Correct answer: B. Paleozoic. I took the test and it was right.

6 0

3 years ago

Read 2 more answers