2 years ago

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

2 answers:

7 0

I think it's A person sits on a chair and pushes down, and the chair pushes upwards on the person. It makes the most sense when applied

Mekhanik [1.2K]2 years ago

3 0

Answer:

Explanation:

an object stays in motion until a force changes that

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Ahat [919]

I think the answer may be D- mechanical

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3 years ago

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Find acceleration. Will give brainliest!

zalisa [80]

Answer:

16200 km/s

270 km/min

4.5 km/h

Explanation:

Acceleration Formula: Average Acceleration = Δv/Δt (change in velocity over change in time)

Simply plug in our known variables and solve:

a = (45.0 - 0)/10

a = 45.0/10

a = 4.5 km/h

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2 years ago

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Which of the following is an example of a chemical change?

tankabanditka [31]

b. burning paper

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2 years ago

Tonya is thinking about the topic presented in the text, "Do opposites really attract?" Which of her thoughts is an example of c

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3 years ago

A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius 2.0 m). When the mass is at the highest point

il63 [147K]

Answer:

31.1 N

Explanation:

m = mass attached to string = 0.50 kg

r = radius of the vertical circle = 2.0 m

v = speed of the mass at the highest point = 12 m/s

T = force of the string on the mass attached.

At the highest point, force equation is given as

$T + mg =\frac{mv^{2}}{r}$

Inserting the values

$T + (0.50)(9.8) =\frac{(0.50)(12)^{2}}{2}$

T = 31.1 N

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2 years ago

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