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Andre45 [30]
3 years ago
7

A subway car whose mass is 52,000. kg is traveling with a velocity of 3.4 m/s due north and collides with a second subway car wh

ose mass is also 52,000. kg and is at rest. If the two cars stick together after the collision, what is the velocity of the two cars?
Physics
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

Answer:

1.7 m/s

Explanation:

52,000kg x 3.4 m/s= 176,800

52,000+52,000= 104,000

176,800/104,000= 1.7m/s

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Belly-flop Bernie dives from atop a tall flagpole into a swimming pool below. His potential energy at the top is 7000 J (relativ
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Answer:

KE₂ = 6000 J

Explanation:

Given that

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Lets take kinetic energy at bottom level =  KE₂

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Racing greyhounds are capable of rounding corners at very high speeds. A typical greyhound track has turns that are 45 m diamete
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Answer:

In m/s^2:

a=11.3778 m/s^2

In units of g:

a=1.161 g

Explanation:

Since the racing greyhounds are capable of rounding corners at very high speed so we are going use the following formula of acceleration for circular paths.

a=\frac{v^2}{r}

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In g units:

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Answer

Explanation:

As the three resistors are connected in series, the expression to be used for the  

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RT = R1 + R2 + R3

We replace the data of the statement in the previous expression and it remains:  

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We perform the mathematical operations that lead us to the result we are looking for:  

RT - 30Ω

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