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4 years ago

5

In an experiment what are all the parts of an experiment that remain unchanged are called

1 answer:

stira [4]4 years ago

3 0

The answer for this question is Control Variable because it doesn’t change throughout the experiment.

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According to Newton, there were two things needed for an object to fall around or orbit the earth. Label the diagram below with

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Centripetal force and centrifugal force

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4 years ago

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a car headed north at 15 m/s accelerates for 4.25 s to reach a velocity of 28.3 m/s. What is the acceleration of the car?

Liono4ka [1.6K]

<u>Answer:</u>

The acceleration of the car is $3.13 m/s^2$

<u>Explanation:</u>

In the question it is given that car initially heads north with a velocity $15 m/s$ . It then accelerates for $4.25 s$ and in the end its velocity is $28.3 m/s$ .

initial velocity $u = 15 m/s$

time $t=4.25 s$

final velocity $v=28.3 m/s$

The equation of acceleration is

$a= \frac{(v-u)}{t}$

$= \frac{(28.3-15)}{4.25} = \frac {13.3}{4.25} =3.13m/s^2$

The value of acceleration is positive, here since the car is speeding up. If it was slowing down the value of acceleration would be negative.

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3 years ago