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nika2105 [10]
4 years ago
11

Acceleration is the change in velocity over time. Given this information, is acceleration a vector or a scalar quantity? Explain

.
Physics
1 answer:
gladu [14]4 years ago
5 0

Answer:

Vector quantity.

Explanation:

Acceleration is defined as the rate of change in the value of velocity with the time change.

Acceleration can be defined by the second law of newton in which the acceleration is produce due to the net force.

The SI unit of acceleration is m/s^{2}.

The acceleration follow all the law of vector addition, whether parallelogram law of addition as well as triangular law of vector addition.

Therefore, by the above discussion we can define that the acceleration is a vector quantity.

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(c) A moving train has a kinetic energy of 8.1 x 10(power of 6)J.
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the friction force provided by the brakes is 30000 N.

<h3>What is friction force?</h3>

Friction force is the force that opposes the motion between two bodies in contact.

To calculate the average friction force provided by the brakes, we apply the formula below.

Formula:

  • K.E = F'd............. Equation 1

Where:

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Make F' the subject of the equation

  • F' = K.E/d............ Equation 2

From the question,

Given:

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Substitute these values into equation 2

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Hence, the friction force provided by the brakes is 30000 N

Learn more about friction force here: brainly.com/question/13680415

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