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luda_lava [24]
3 years ago
14

Which of these is an example of Newton’s first law of motion?

Physics
1 answer:
alekssr [168]3 years ago
8 0

Answer:

all of them

Explanation:

jk so its D :)

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A sled is on an icy (frictionless) slope that is 30° above the horizontal. When a 40-N force, parallel to the incline and direct
son4ous [18]

Answer: 5.8kg

Explanation:

F - mg sinΦ = ma

Given that

M=?

g= 9.8

Φ= 30

a= 2

F= 40 then

40 - 9.8 * m * sin 30 = 2 * m

40 = 2 * m + 9.8 * m * sin 30

40 = (2 + 9.8 * sin 30) m

m = 40 / (2 + 9.8 * 0.5)

m = 40 / (2 + 4.9)

m = 40 / 6.9

m = 5.797kg

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4 0
3 years ago
A spring stretches by 0.014 m when a 3.7-kg object is suspended from its end. How much mass should be attached to this spring so
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Explanation:

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3 years ago
_____ is the frictional force needed to slow an object in motion
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Answer:

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Explanation:

8 0
3 years ago
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1. Calculate the height of tree, 250 m away that produces
gtnhenbr [62]

Answer:

Explanation:

1.5/30 = x/250

x = 12.5 m

5 0
2 years ago
A car is up on a hydraulic lift at a garage. The wheels are free to rotate, and the drive wheels are rotating with a constant an
masya89 [10]

Answer:

Explanation:

Given

Wheels are rotating with constant angular velocity let say \omega

Presence of constant angular velocity show that there is no angular acceleration thus there is no tangential acceleration.

But any particle on the rim will experience a constant acceleration towards center called centripetal acceleration.

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(c)centripetal acceleration

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a_c=\omega ^2\times r

                                   

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