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3 years ago

The coefficient of static friction is usually

Physics

2 answers:

Lelu [443]3 years ago

5 0

Answer:

Higher than the coefficient of kinetic friction.

Explanation:

Hope it helps u.. :)

malfutka [58]3 years ago

4 0

I hope this helps. If it does, please give brainliest

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A 150 kg object takes 90 seconds to travel a 2500 meter straight path. It begins the trip traveling 120 meters per second and de

Nana76 [90]

The acceleration is -1.111 m/s²

Explanation:

In this case acceleration is calculated as change in velocity divided by time.

Change in velocity is 20m/s-120 m/s = -100 m/s

Time is 1.5 minutes------change it to seconds by multiplying 1.5 by 60 seconds

Acceleration will be : -100 m/s / (1.5*60) = -1.111 m/s²

Learn More

To calculate acceleration :brainly.com/question/856414

Keywords : object, travel, straight path, velocity, decelerate, acceleration

#LearnwithBrainly

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4 years ago

Un hamster esta sentado sobre un tocadisco cuya rapidez angular es constante si el hamster se mueve a un punto localizado al dob

kotegsom [21]

Answer:

b) se duplica

Explanation:

The disk is moving with constant angular velocity, let's call it $\omega$ .

The linear velocity of a point on the disk is given by

$v=\omega r$

where r is the distance of the point from the axis of rotation.

In this problem, the object is moved at a distance twice as far as the initial point, so

$r' = 2r$

Therefore, the new linear velocity is

$v'=\omega r' = \omega (2r) = 2 \omega r = 2 v$

So, the velocity has doubled, and the correct answer is

b) se duplica

8 0

3 years ago

PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (40pts)

melisa1 [442]

D.)downward toward the center of earth

7 0

3 years ago

Not a question but need a lot of tips

skad [1K]

DibujaZos da buenos tips e incluso el pinta con colores faber castel son económicos y el dibujo queda epico

8 0

3 years ago

Merry-go-rounds are a common ride in park playgrounds. The ride is a horizontal disk that rotates about a vertical axis at their

goldfiish [28.3K]

Answer:

2.55348650884 m/s

2.67400481907 m/s²

10.6960192763 m/s²

Explanation:

d = Diameter of the ride = 16 ft= $16\times 0.3048=4.8768\ m$

r = Radius = $\dfrac{4.8768}{2}=2.4384\ m$

t = Time taken = 6 seconds

Velocity is given by

$v=\dfrac{2\pi r}{t}\\\Rightarrow v=\dfrac{2\pi 2.4384}{6}\\\Rightarrow v=2.55348650884\ m/s$

The speed is 2.55348650884 m/s

Acceleration is given by

$a=\dfrac{v^2}{r}\\\Rightarrow a=\dfrac{(\dfrac{2\pi 2.4384}{6})^2}{2.4384}\\\Rightarrow a=2.67400481907\ m/s^2$

The acceleration is 2.67400481907 m/s²

When the speed is halved

$v=\dfrac{2\pi 2.4384}{\dfrac{6}{2}}=5.10697301768\ m/s$

$a=\dfrac{v^2}{r}\\\Rightarrow a=\dfrac{(\dfrac{2\pi 2.4384}{\dfrac{6}{2}})^2}{2.4384}\\\Rightarrow a=10.6960192763\ m/s^2$

The acceleration is 10.6960192763 m/s²

3 0

4 years ago