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notka56 [123]
3 years ago
12

If you toss a ball vertically upward in a uniformly moving train, it returns to its starting place. Will it do the same if the t

rain is accelerating?
Physics
1 answer:
gogolik [260]3 years ago
3 0

Answer:No

Explanation:

No

As the train is accelerating so train velocity will be more as compared to the ball  and thus will cover more distance as compared to the ball.

When the ball is thrown upward with some velocity, it also possesses the train velocity at the time of throwing but as time passes velocity of train increases due to acceleration of the train. This causes the ball to fall behind the point of launch.

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d1i1m1o1n [39]

Answer:

Assuming there is no heat loss to the surrounding.

Heat lost by iron equals heat gained by water.

0.2(450)(50-x)=0.2(4200)(x-30)

x=31.94 °C

Explanation:

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3 years ago
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bonufazy [111]

Answer:

families

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what is the net force of a 6 kg object that goes from a velocity of 0.5 m/s to a velocity of 3 m/s over the course of 1.5 second
baherus [9]

Answer:

∑F = 10.2 N

Explanation:

We have:

Initial velocity: 0.5 m/s

Final velocity: 3 m/s

Time: 1.5 s

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a = vf-vo/t

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Now, look at the Net Force equation:

∑F = ma

Plug in the variables, to get:

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3 0
3 years ago
The velocity vector of an object with a centripetal acceleration is never tangent to the circular path.
Veseljchak [2.6K]

<em>The velocity vector of an object with a centripetal acceleration is never tangent to the circular path is False.</em>

Answer: <em>False</em>

Explanation:

Centripetal acceleration is a feature of objects in uniform circular motion. In that case velocity is along the tangent drawn to the circular path. For an object to be called accelerating its velocity should be variable but speed needn’t.  

Even when the speed is constant an object can be accelerating. The direction of velocity of an object in uniform circular motion keeps changing  continuously. This change in velocity in uniform circular motion is equal to the centripetal acceleration.

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