All categories

3 years ago

A 1.0kg cart moving right at 5.0 m/s on a frictionless track collides and

1 answer:

6 0

Let’s use the *queue dramatic voice* LAW OF THE CONSERVATION OF MOMENTUM!
m1v1i + m2v2i = m1vf + m2vf

m1v1i - m1vf = m2vf - m2v2i

m1(v1i - vf) = m2(vf - v2i)

m2 = [m1(v1i - Vf)] / (vf - v2i)

m2 = [(1)(5 - -1)] / (-1 - -2)

m2 = 6 / 1

m2 = 6 kg
And that’s your final answer! Please press “Thanks”!

You might be interested in

A long wave with a period of about 15 minutes will travel across the oceans at a speed of approximately _______.

Temka [501]

The speed of the wave is mathematically given as

v=2266.66m/s

A long wave with a period of about 15 minutes will travel across the oceans at a speed of approximately v=2266.66m/s

<h3>Speed of the wave</h3>

Question Parameters:

A long wave with a period of about 15 minutes

Generally the equation for the Wave velocity is mathematically given as

v=\lambda * frequency

Where

f=1/t

Therefore

v=\lambda * frequency

v=\lambda * 1/t

Therefore, with wavelenght of the ocean as 34km

v=34*1000*1/15

v=2266.66m/s

For more information on Speed

brainly.com/question/4931057

7 0

2 years ago

Sir Isaac newton's book on laws of motion and gravity is considered of what significance

Mars2501 [29]

Answer:

Explanation:

a brilliant work on all the principles it open up a whole new world and change the world algebraicly

7 0

3 years ago

Cómo se complementan la ciencia y la tecnología

Andreyy89

Answer:

La ciencia y la tecnología se complementan porque la tecnología necesita que la ciencia sea una cosa y la ciencia se usa en tecnología

Explanation:

4 0

3 years ago

The length of a certain wire is kept same while its radius is doubled. what is the change in the resistance of this wire?

kaheart [24]

The resistance of a wire is given by
$R= \frac{\rho L}{A}$
where $\rho$ is the resistivity of the material, L the length of the wire and A its cross-sectional area.

In the problem, $\rho$ and L remain the same, while A changes because the radius changes. The area is given by:
$A=\pi r^2$
This means that if we double the radius (2r), the area becomes
$A_{new}= \pi (2r)^2 = 4 \pi r^2 =4A$
And therefore, the new value of the resistance is
$R_{new} = \frac{\rho L}{4 A}= \frac{1}{4}R$

So, when the radius is doubled, the resistance becomes $\frac{1}{4}$ of its original value.

6 0

3 years ago

-) Josh and Mark are climbing a ladder on the playground. Josh is 3m up the ladder and has a mass of 50 kg

iren2701 [21]

I think the correct answer is A mark has greater gravitational potential energy
:)

6 0

3 years ago