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4 years ago

Three parachutists have the following masses: A: 50 kg, B: 40 kg, C: 75 kg Which one has the greatest terminal velocity?

Physics

1 answer:

allochka39001 [22]4 years ago

5 0

Answer:

A: 50 kg

Explanation:

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4. A train starts its journey and accelerates at 5 ms 2. How long does it take for it to reach a velocity of 100 ms??

Agata [3.3K]

Answer:

20 seconds

Explanation:

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3 years ago

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Until a train is a safe distance from the station, it must travel at 5 m/s. Once the train is on open track, it can speed up

nignag [31]

Answer:

The acceleration of the train is 5 m/s².

Explanation:

Acceleration is the change in velocity over a given time interval.

Therefore, acceleration is given as:

$a=\frac{v_{f}-v_{i}}{\Delta t}$

Where, $v_{i}\textrm{ and }v_{f}$ are initial and final velocities and $\Delta t$ is the time interval.

Here, $v_{i}=5\textrm{ m/s},v_{f}=45\textrm{ m/s},\Delta t=8\textrm{ s}$

This gives,

$a=\frac{45-5}{8}=\frac{40}{8}=5\textrm{ }m/s^{2}$

Therefore, the acceleration of the train is 5 m/s².

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3 years ago

Based on its chemical makeup, where do you think amazonite is found? Please help me!

dezoksy [38]

It can be found in the U.S. and other parts around the world! It doesn't come from the Amazon River, but it's been found in Brazil before. Also, Amazonite is a green variety of "Microline Feldspar".

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3 years ago

If you borrow your mom's car to drive 128 m to the store, but you go cruising

valina [46]

Answer:

v = 0.349 m/s

Explanation:

If you borrow your mom's car to drive 128 m to the store, but you go cruising instead and drive a total distance of 1256 m in 3600s.

We need to find your speed during the trip. It is equal to the total distance divided by time taken.

He has done cruising instead and drive a total distance of 1256 m.

So,

$v=\dfrac{d}{t}\\\\v=\dfrac{1256\ m}{3600\ s}\\\\v=0.349\ m/s$

So, the speed of the person during the trip is 0.349 m/s.

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4 years ago

The net fedrce on a 12 kg cart is 3.2N backward. Ignoring friction, what is the acceleration

aivan3 [116]

Mass,m = 12 kg

Force,F = 3.2 N

<h3>To be calculated:- </h3>

Calculate the acceleration ( a ) .

<h3>Solution:- </h3>

We know that,

$\bf \: Force = Mass × Acceleration$

$\sf\implies \: 3.2 = 12 \: \times a$

$\sf \implies \: a = \dfrac{3.2}{12}$

$\sf \implies \: a = \dfrac{32}{12 \times 10}$

$\sf \implies \: a \: = \dfrac{8}{3 0}$

$\sf \implies \: a = 0.266$

$\sf \implies \: a = 0.27 \: m {s}^{ - 2} \: (approx)$

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3 years ago

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