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3 years ago

Terminal velocity is usually defined as the

2 answers:

6 0

Using the word "Terminal" which means end, we can conclude that, in a nutshell, terminal velocity is when an object reaches a speed where it cannot go any faster. For example, if you jumped of the Empire State building, before you went "KURSPAT!" on the pavement below, you would enter Terminal Velocity. Your fall off the Empire State building would also be "terminal". eh? Hahahaha never try a physics joke.

Andre45 [30]3 years ago

4 0

The consent speed of something freely falling object eventually reaches the resistance of the medium through which it is falling prevents further acceleration.

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Initial State: An 8-month old child is at rest at the bottom of a staircase.

lord [1]

Answer:

9 years old and he/she crawl like at 2 years old

6 0

3 years ago

Which of the following ways of writing 1000w is incorrect?

xenn [34]

Answer:

the third one is incorrect

Explanation:

10 x 10³= 10^1 x 10^3 = 10^4

8 0

3 years ago

The two conducting rails in the drawing are tilted upwards so they each make an angle of 30.0° with respect to the ground. The v

dolphi86 [110]

Answer:

The current flows through the rod is 14.9 A.

Explanation:

Given that,

Magnetic field = 0.045 T

Mass of aluminum rod = 0.19 kg

Length = 1.6 m

Angle = 30.0°

We need to calculate the force

Using resolving force

$F\cos\theta=mg\sin\theta$

$F=mg\tan\theta$

Put the value into the formula

$F=0.19\times9.8\times\tan30$

$F=1.075\ N$

We need to calculate the current flows through the rod

Using formula of magnetic force

$F=iLB$

$i=\dfrac{F}{LB}$

Put the value into the formula

$i=\dfrac{1.075}{1.6\times0.045}$

$i=14.9\ A$

Hence, The current flows through the rod is 14.9 A.

8 0

3 years ago

An object is moving but we don't know its mass or velocity. A force of 20 newtons to the right

jok3333 [9.3K]

The impulse is (force) x (time) = (20 N) x (20 sec) = 400 N-sec

When we grind through the units, we find that the [newton-second]
is exactly the same as the [kilogram-meter/sec] unit-wise, and once
we know that, it doesn't surprise us to learn that impulse is equivalent
to a change in momentum (mass x speed ... also kg-m/s).

So this impulse exerted on the moving object adds 400 kg-m/s of
linear momentum to its motion, directed to the right. That may or
may not be the total change in its momentum during that 20-sec,
because our 20-N may not be the only force acting on it.

8 0

3 years ago

An object initially at rest accelerates at 5 meters per second2 until it attains a speed of 30 meters per second. What distance

Tcecarenko [31]

Answer: 90m

Explanation:

Use Equation for distance:

S=a*t²/2

use eqation for acceleraton a=(Vf-Vs)/t

Vs- starting speed

Vf - final speed

a-accelaration

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

a=5m/s²

Vs=0m/s

Vf=30m/s

use

a=(Vf-Vs)/t

to find time

t=(Vf-Vs)/a

t=30m/s/5m/s²

t=6s

Now calculate distance that object travel using:

S=(a*t²)72

s=(5m/s²*(6s)²)/2

S=90m

4 0

3 years ago

Read 2 more answers