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2 years ago

6

At the circus, a 100-kilogram clown is fired 15 meters per second from a 500-kilogram cannon. What is the recoil speed of the ca

nnon?

1 answer:

Ahat [919]2 years ago

4 0

Recoil speed= 3m/s, method shown in photo

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3 years ago

Which item contains a switch that opens when the current in a circuit is too high?

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it is circuit breaker

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3 years ago

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What happens when heat is removed from a liquid and it cools?

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3 years ago

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If the train can slow down at a rate of 0.625 m/s2, how long, in seconds, does it take to come to a stop from this velocity?

qwelly [4]

Answer:

66.28 s

Explanation:

Step 1:

Acceleration,a= $0.065m/s^2$

Time,t=9.75 min= $9.75\times 60=585s$

1 min=60 s

Initial velocity,u= $3.4m/s$

We have to find the final velocity of train.

We know that

$v=u+at$

Substitute the values

$v=3.4+0.065(585)=41.425m/s$

Step 2:

Now, initial velocity,u=41.425m/s

Deceleration,a= $-0.625m/s^2$

Because the train velocity decreases

Final velocity, v=0

Again, substitute the values in the above formula

$0-41.425=-0.625t$

$-41.425=-0.625t$

$t=\frac{-41.425}{-0.625}$

$t=66.28s$

Hence, the train takes 66.28 s to come to stop from velocity 41.425m/s.

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3 years ago

Does sound travel faster in a warm room or a cold room? Explain your answer.

Natasha_Volkova [10]

Answer:

The speed of sound is greater in hot air than it is in cold air. This is because the molecules of air are moving faster and the vibrations of the sound wave can therefore be transmitted faster. This means that when sound travels from hot air to cold air or from cold air to hot air it will refract.

Explanation:

Hope this will be help!

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3 years ago

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