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1 year ago

9

Random errors can be reduced by taking repeated measurements.Error and uncertainty are interchangeable words that describe the s

ame concept.are these statements true or false

1 answer:

fiasKO [112]1 year ago

5 0

repeated mesurement can reduce the error

it is true

if you take any mesurement repeatedly and the average is taken, the error will be less

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3 years ago

how fast will and in what direction will a 20kg object accelerate if one force pushes at a 30 degree angle and another pushes at

DiKsa [7]

Answer:

$|a|=2.83\ m/s^2$

$\theta=75^o$

Explanation:

<u>Net Force And Acceleration </u>

The Newton's second law relates the net force applied on an object of mass m and the acceleration it aquires by

$\vec F_n=m\vec a$

The net force is the vector sum of all forces. In this problem, we are not given the magnitude of each force, only their angles. For the sake of solving the problem and giving a good guide on how to proceed with similar problems, we'll assume both forces have equal magnitudes of F=40 N

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The components of the second force are

$\vec F_2=$

$\vec F_2=\ N$

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$\vec F_n=$

$\vec F_n=\ N$

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$\displaystyle |a|=\frac{56.57}{20}$

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$\displaystyle tan\theta=\frac{54.64}{14.64}$

$\theta=75^o$

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3 years ago

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I hope this helps!

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2 years ago