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Pani-rosa [81]
3 years ago
15

A car initially at rest can accelerate at 7 m/s2. How long will it take the car to reach 60 m/s?

Physics
2 answers:
LUCKY_DIMON [66]3 years ago
7 0

Answer:8.57sec.

Explanation: First you take the Acceleration Formula which is a=(vf-vi)/t and plug everything in to where you get 7m/s^2= (60-0)/t. now you take that and rearrange it to t=60/7 which finally comes to your answer of 8.57sec.

strojnjashka [21]3 years ago
5 0

Answer:

The answer to your question is      t = 8.6 s

Explanation:

Data

Initial velocity = vo = 0 m/s

acceleration = a = 7 m/s²

time = t = ?

final velocity = vf = 60 m/s

Formula

             vf = vo + at

-Solve for t

             at = vf - vo

               t = (vf - vo) / a

-Substitution

               t = (60 - 0) / 7

-Simplification

               t = 60 / 7

-Result

                t = 8.6 s

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How do mountain glaciers and continental glaciers differ in terms of dimensions, thickness and patterns of movement?

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3 years ago
Review Conceptual Example 6 as background for this problem. A car is traveling to the left, which is the negative direction. The
DiKsa [7]

Answer:

(a) 1.21 m/s² (b) 1.75 m/s²

Explanation:

The initial speed of the car, u = 17.8 m/s

Case 1.

Final speed of the car, v = 23.5 m/s

Time, t = 4.68-s

Acceleration = rate of change of velocity

a=\dfrac{23.5 -17.8 }{4.68}\\\\a=1.21\ m/s^2

Case 2.

Final speed of the car, v = 15.3 m/s

a=\dfrac{23.5 -15.3}{4.68}\\\\a=1.75\ m/s^2

Hence, this is the required solution.

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2 years ago
What is the mass of an object if a force of 2N and gives it an acceleration of 2 m/s2​
tino4ka555 [31]

Answer:

1kg

Explanation:

Use the formula

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m=1kg

6 0
2 years ago
Write short letters.
Svetradugi [14.3K]

Answer:

No. 67

Peter Street

12th Road

Chennai

24th June 201_

Dear Amrish

I have come to know that since your school has closed for the Autumn Break you have plenty of free time at your disposal at the moment. I would like to tell you that even I am having holidays now.

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4 0
3 years ago
Read 2 more answers
Uniformly charged ring with 180 nC/m and radius R= 58 cm. Find the magnitude of the electric field in KN/C at a point P on the a
raketka [301]

Answer:

3.135 kN/C

Explanation:

The electric field on the axis of a charged ring with radius R and distance z from the axis is E = qz/{4πε₀[√(z² + R²)]³}

Given that R = 58 cm = 0.58 m, z = 116 cm = 1.16m, q = total charge on ring = λl where λ = charge density on ring = 180 nC/m = 180 × 10⁻⁹ C/m and l = length of ring = 2πR. So q = λl = λ2πR = 180 × 10⁻⁹ C/m × 2π(0.58 m) = 208.8π × 10⁻⁹ C and ε₀ = permittivity of free space = 8.854 × 10⁻¹² F/m

So, E = qz/{4πε₀[√(z² + R²)]³}

E = 208.8π × 10⁻⁹ C × 1.16 m/{4π8.854 × 10⁻¹² F/m[√((1.16 m)² + (0.58 m)²)]³}

E = 242.208 × 10⁻⁹ Cm/{35.416 × 10⁻¹² F/m[√(1.3456 m² + 0.3364 m²)]³}

E = 242.208 × 10⁻⁹ Cm/35.416 × 10⁻¹² F/m[√(1.682 m²)]³}

E = 6.839 × 10³ Cm²/[1.297 m]³F

E = 6.839 × 10³ Cm²/2.182 m³F

E = 3.135 × 10³ V/m

E = 3.135 × 10³ N/C

E = 3.135 kN/C

3 0
3 years ago
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