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kodGreya [7K]
3 years ago
13

A force of 1 N will cause a mass of 1 kg to have an acceleration of 1 m/s2. Therefore, a force of 7 N applied to a mass of 7 kg

will cause it to accelerate at what rate?
1 m/s2

0.14 m/s2

8 m/s2

49 m/s2

7 m/s2
Physics
2 answers:
Lana71 [14]3 years ago
3 0

1 m/s^2

Using F=ma,

7=7a

a=1

Angelina_Jolie [31]3 years ago
3 0
<h2>Answer:</h2>

<u>The correct choice is </u><u>1 m/s2</u>

<h2>Explanation:</h2>

According to the unitary method if a force of 1 N will cause a mass of 1 kg to have an acceleration of 1 m/s2.

Then obviously  force of 7 N applied to a mass of 7 kg will also cause the acceleration of the same rate which will be 7m/s^2

Or

we can use the Newtons law

F = m a

7 = 7 * 1

= 1

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The initial velocity of the car can be calculated by using one of the equation of motion as follows:

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Where;

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According to this question, a car accelerates at a constant rate of 3 m/s² for 5 seconds. If it reaches a velocity of 27 m/s, its initial velocity is calculated as follows:

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