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Dennis_Churaev [7]
2 years ago
13

I need help!!!! I don’t understand physical science at all.

Physics
1 answer:
allochka39001 [22]2 years ago
3 0
B is the correct answer
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3 years ago
A snowball is thrown with an initial x velocity of 7.5 m/s and an initial y velocity of 8.4 m/s . Part A How much time is requir
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In order to calculate the time taken by the snowball to reach the highest point in its journey, we need to consider the variables along the y-direction.

Let us list out what we know from the question so that we can decide on the equation to be used.

We know that Initial Y VelocityV_{iy} = 8.4 m/s

Acceleration in the Y direction a_{y} = -9.8 m/s^{2}, since the acceleration due to gravity points in the downward direction.

Final Y Velocity V_{fy} = 0 because at the highest point in its path, an object comes to rest momentarily before falling down.

Time taken t = ?

From the list above, it is easy to see that the equation that best suits our purpose here is V_{fy} = V_{iy} + a_{y}t

Plugging in the numbers, we get 0 = 8.4 - (9.8)t

Solving for t, we get t = 0.857 s

Therefore, the snowball takes 0.86 seconds to reach its highest point.

8 0
4 years ago
How many cm3 are there in 1 dm3?
Verdich [7]

The answer is in the picture.

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Now explore friction force. Set the piece of plastic or wood on the table and push it steadily across the tabletop using your fi
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The tabletop is smooth so my finger is down it fast and easy. The fabric however slowed my finger down considerably, and it was harder for me to move my finger across it.

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Hope this helps.

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Referring to the map of the temperature field in the room, where was the warmest field found?
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