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3 years ago

How does the law of inertia relate to passengers on a train that is slowing down suddenly.

2 answers:

7 0

Inertia is the tendency of an object to remain at rest or in motion.

According to Newton's First Law of Motion states that an body at rest will remain at rest or move at a constant speed in a straight line unless it is acted on by an unbalanced force.

The train is this case is moving forward it will continue to move forward unless friction or the brakes interfere with its movement. Say for instance the train abruptly accelerated then the passengers may feel it as though their bodies are moving backward. In reality, inertia is making the body want to stay in place as the train moves forward.

Sorry if the explainataion is long. Do you understand or are you confused?

lesya [120]3 years ago

4 0

Hold on I’m getting it to u right now

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Suppose a pendulum bob is swinging back and forth. If the highest point is 12.5 cm above the lowest point, what would be speed o

Colt1911 [192]

Answer:

The speed of the bob when it passes the lowest point $V = 1.57 \frac{m}{s}$

Explanation:

Given data

$H = 12.5 \ cm = 0.125 \ m\\$

When a pendulum swinging back & forth then at highest point the velocity is zero and lowest point velocity is maximum.

Velocity at lowest point is given by

$V = \sqrt{2 g H}$

$V = \sqrt{2 (9.81)(0.125)}$

$V = 1.57 \frac{m}{s}$

Therefore the speed of the bob when it passes the lowest point $V = 1.57 \frac{m}{s}$

7 0

3 years ago

Momentum has a _____.<br> a. direction only<br> b. magnitude only<br> c. direction and magnitude

weeeeeb [17]

Momentum has both direction and magnitude.

It is a vector quantity.

Its formula is = Mass * Velocity, Mass you know is associated with size and velocity of course is associated with direction.

C. direction and magnitude

5 0

3 years ago

Read 2 more answers

Water floats on a liquid called "carbon tetrachloride." The two liquids do not mix. A light ray passing from water into carbon t

Oduvanchick [21]

Answer:

1.26

Explanation:

$index \: of \: refraction \: = \: \ \frac{ \sin(angle \: of \: incidence) }{ \sin(angle \: of \: refraction) }$

$\frac{ \sin(45.0) }{ \sin(40.1) }$

= 1.26

5 0

4 years ago

Pls help me with this one

lora16 [44]

Answer :

The answer is clearly C

Explanation:

Because the only way currents move are to the side

5 0

3 years ago

A conducting coil of 1850 turns is connected to agalvanometer, and the total resistance of the circuit is 45.0 ohm.The area of e

Xelga [282]

Answer:

0.459 Tesla

Explanation:

Faraday's law:

$Emf = -N\frac{\delta\phi}{\delta t}$

Φ= NAB

V = N Δ (BA) /Δt

the change in BA

was: BA = 0 because initially B was zero.

V=IR

IR = N B A /Δt

q / Δt ×R = N B A / Δt

Or: B = q R / NA = 8.87 x 10^-3 × 45.0 / 1850×4.7 x 10^-4 =

= 0.459 Tesla

3 0

4 years ago