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3 years ago

I need a short written description of Newton's three laws.

1 answer:

6 0

Newton’s first law of motion, also called the law on inertia, states that an object continues in its state of rest or of uniform motion unless compelled to change that state by an external force.Newton’s second law of motion states that if a net force acts on an object, it will cause an acceleration of that object.Newton’s third law of motion<span> states that for every action there is an equal and opposite reaction. hope this wasnt two long!</span>

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What does the blackboard do when white light falls on it?

shusha [124]

Actually a black board has all colours in light or white light . So when light falls on it board absorbs all colours because all are present so no light is reflected back. That is the case, and so it will appear black as it absorbs all colours of light that fall on it .

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2 years ago

Trace fossils are much more common than body fossils. Which of the following best explains why trace fossils are more common?

Anika [276]

<span>the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.</span>

7 0

3 years ago

Answer all these questions for a TON OF POINTS

IgorC [24]

1). E
2). A
3). 4N
4). D

3 0

3 years ago

Read 2 more answers

A 0.155 kg arrow is shot upward

Soloha48 [4]

Answer: 244.05 J

Explanation:

To find speed at 30 m above the ground use equation:

V²=Vo²-2Gs

V0=31.4m/s

s=30m

G=9.81m/s²

-----------------------

V²=31.4²-2*9.81*30

V²=985.96+588.6

V²=1574.56

V=39.68m/s ---speed of arrow on 30 m obove the ground

Use equation for kinetic enrgy:

Ke=mV²/2

m=0.155kg

V=39.68m/s

-------------------------

Ke=0.155kg*(39.68m/s)²/2

Ke=0.155*1574.5/2

Ke=244.05J

6 0

3 years ago

Which idea is associated with Copernicus? Select one: a. The orbits of the planets are circles. b. The orbits of the planets are

Schach [20]

Answer:

d. The earth rotates around the sun

Explanation:

Nicolas Copernicus is considered the first person to give the theory of heliocentric, or Sun-centered system of our planetary system.

In the heliocentric system, it is considered that the sun is stationary and the earth revolves around the sun.

He stated that the sun is at the center of the universe and the earth spins on its axis once daily and revolves around the sun in one year.

And today we know it is correct that earth rotates on its own axis and also revolves around the sun.

8 0

3 years ago