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3 years ago

Why is NEWTON'S First Law of Motion often called the LAW OF INERTIA?

Physics

1 answer:

ANEK [815]3 years ago

8 0

Answer:

According to newtons first law of motion an object remains in its state of rest or motion in a straight line unless an external unbalanced forces acts upon it. This is the reason why Newtons first law of motion is often called the LAW OF INERTIA

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A girl running around a circular track of radius 200 m completes one

kondor19780726 [428]

Answer:

v = 2 m/s

Explanation:

First, we find the angular velocity of the girl by using the following formula:

$Angular\ Velocity =\omega= \frac{Angular\ Distance\ Covered}{Time\ Taken}\\\\\omega = \frac{1\ revolution}{10\ min}\frac{1\ min}{60\ s}\frac{2\pi\ rad}{1\ revolution}\\\\\omega = 0.01\ rad/s$

Now, for the average velocity of the girl we can use the following formula:

$Average\ Velocity = V = r\omega\\V = (200\ m)(0.01\ rad/s)\\$

where,

r = radius = 200 m

therefore,

4 0

3 years ago

Two billiard balls of equal mass are on a level, frictionless surface. The first ball is moving and collides with the second bal

DanielleElmas [232]

B. One-half of its original speed

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4 years ago

The sum of 24.686 m, 2.343 m and 3.21 m with correct significant figures is

kirill115 [55]

Answer:

30.24m

Explanation:

When adding numbers together, we round to the smallest number of decimal places of the numbers, which is 2 decimal places in this case.

24.686m + 2.343m + 3.21m = 30.23<u>9</u> m

≈ 30.24m (round to 2 d.p.)

When you round numbers to a certain digit (hundredth in this case), you would want to look on the digit on its right (thousandth in this case). If that digit is 1-4, you round the digit down. If that digit is 5-9, you round the digit up. Since the digit in the thousandths place is 9, you round the hundredth digit up from 3 to 4.

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3 years ago

Do YOU think aliens are real? HELP PLS

nikdorinn [45]

Answer:Yes

Explanation:yeah i think it could be possible because the universe is so far and wide its probably infinite and if we did i personally believe that we would be absolutely be annihilated by them because we would be so far behind technology wise we would have no use for the\

<h2>YOU FELL FOR IT FOOL THUNDER CROSS SPLIT ATTACK</h2><h2></h2>

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3 years ago

Check all that apply. a) The work done by a nonconservative force depends on the path taken. b) A nonconservative force permits

ziro4ka [17]

Answer:

a) The work done by a nonconservative force depends on the path taken. True.

c) A potential energy function can be specified for a conservative force. True

d) A conservative force permits a two-way conversion between kinetic and potential energies. True

Explanation:

Non-conservative forces dissipate. For example, friction or air resistance or drag.

A conservative force's property is that the work done in moving a particle does not depend on the path it has taken. For example, stored energy or potential energy. It permits two-way conversion between kinetic energy and potential energy. For example if a car goes up a hill, it converted kinetic energy in to potential energy. and if the car goes down the hill without hitting the gas pedal, it will roll down converting the potential energy in to kinetic energy.

b) A nonconservative force permits a two-way conversion between kinetic and potential energies. False

e) A potential energy function can be specified for a nonconservative force. False

f) The work done by a conservative force depends on the path taken. False

5 0

3 years ago