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3 years ago

Trolley A, of mass 180 g, is moving at a velocity of 4 m/s towards trolley B

Physics

1 answer:

Fed [463]3 years ago

8 0

Answer:

<h2>To solve typical questions like this we can use law of conversation of linear momentum...which is</h2>

(Total initial linear momentum = total final linear momentum.)

<u>Momentum = mass × velocity</u>

180×4 + 120×0 = 180×0 + 120×V

(180 ×4)/120 = V

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A 10000 kg rocket blasts off vertically from the launch pad with a constant upward of 2.25 m/s2 and feels no appreciable air res

Sloan [31]

Answer:

The maximum height that the rocket reaches is 645.5 m.

Explanation:

Given that,

Mass = 10000 kg

Acceleration = 2.25 m/s²

Distance = 525 m

We need to calculate the velocity

Using equation of motion

$v^2=u^2+2as$

Put the value in the equation

$v^2=0+2\time2.25\times525$

$v=\sqrt{2\times2.25\times525}$

$v=48.60\ m/s$

We need to calculate the maximum height with initial velocity

Using equation of motion

$v^2=u^2-2gh$

$h=\dfrac{v^2-u^2}{-2g}$

Put the value in the equation

$h=\dfrac{0-(48.60)^2}{-2\times9.8}$

$h=120.50\ m$

The total height reached by the rocket is

$h'=s+h$

$h'=525+120.50$

$h'=645.5\ m$

Hence, The maximum height that the rocket reaches is 645.5 m.

4 0

3 years ago

What are the units for measuring current and voltage

Alina [70]

The unit for measuring current is an " ammeter ".
The unit for measuring voltage is a " voltmeter ".

The unit of measure for electrical current is the " Ampere ".

The unit of measure for potential difference (voltage) is the " volt ".

8 0

3 years ago

WILL MARK AS BRAINLIEST IF CORRECT ANSWERS PLZ HELP 15 PTS!!!!!!

nlexa [21]

Question 9 is 100 N.

Question 10 is No, the bike's motion is not changing so it could be at rest or moving at a constant velocity.

Question 11 is Be doubled.

Question 12 is Ella is correct.

Hope i helped.

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More current makes a ________ electromagnet.<br> longer<br> stronger<br> weaker

Taya2010 [7]

Answer: Stronger

Explanation:

I just took it

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Diffusion and osmosis are forms of passive transport.<br><br> True<br> False

pishuonlain [190]

Answer:

True. Diffusion and osmosis are forms of passive transport.

Explanation:

In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached.

In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.

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3 years ago

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