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4 years ago

The motion map shows an object’s position and velocity at given times.

Physics

2 answers:

Dennis_Churaev [7]4 years ago

8 0

the answer is:

A: <u>by adding vectors that are all the same length and placing them above the current top row of vectors</u>

you're welcome

Sladkaya [172]4 years ago

4 0

Answer:

by adding vectors that gradually increase in length and placing them above the current top row of vectors

Explanation:

Since initially the motion map shows that length of vectors are gradually decreasing which means that the acceleration vector is opposite to the velocity due to which it is continuously decreasing with time.

Now once it will take turn then the velocity and acceleration both are in same directions.

So here we will have motion map is like that the vectors will have length gradually increasing which shows that after taking turn the acceleration and velocity is in same directions.

so correct answer will be

by adding vectors that gradually increase in length and placing them above the current top row of vectors

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Explanation:

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3 years ago

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Answer:

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3 years ago

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dezoksy [38]

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3 years ago

Circular Motion A 650-kg car moving at 8.5 m/s takes a turn around a circle with a radius of 48.0 m. Determine the acceleration

ollegr [7]

Answer:

Explanation:

The mass of the car doesn't matter because On a flat curve the mass of the car does not affect the speed at which it can stay on the curve. You would need the mass if you were solving the the centripetal force acting on the car, but not the acceleration.

$a=\frac{v^2}{r}$ and filling in

$a=\frac{(8.5)^2}{48.0}$ and we need 2 significant digits in our answer. That means that

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8 0

3 years ago

a care starting from rest has an acceleration 0.3 m/s square, calculate the velocity and distance travelled by this car after 2

Anna [14]

Answer:

Final velocity (v) = 36 m/s

Distance traveled (s) = 2,160 m

Explanation:

Given:

Initial velocity (u) = 0

Acceleration (a) = 0.3 m/s

Time travel (t) = 2 minutes = 120 seconds

Find:

Final velocity (v) = ?

Distance traveled (s) = ?

Computation:

v = u + at

v = 0 + 0.3(120)

v = 0.3(120)

v = 36 m/s

Final velocity (v) = 36 m/s

Distance traveled (s) = ut + (1/2)at²

Distance traveled (s) = (0.5)(0.3 × 120 × 120)

Distance traveled (s) = 2,160 m

3 0

3 years ago