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Korolek [52]
3 years ago
11

Most persons are of the belief that the old time hard or solid iron cars are much safer in collisions than the new model softer

cars. But how can newer, softer cars be safer in a collision, considering momentum?
Physics
1 answer:
insens350 [35]3 years ago
5 0
Softer cars will crumple better in a collision- they absorb more of the impact force and therefore are safer
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Alice and Tom dive from an overhang into the lake below. Tom simply drops straight down from the edge, but Alice takes a running
tangare [24]

Answer:

Since both start with the same vertical velocity from the same position with the same acceleration they will reach the lake at the same time.

6 0
3 years ago
Why caring a body and moving with it is not a work done<br><br> Why :​
Alecsey [184]

Answer:

Work done on an object is equal to

FDcos(angle).

So, naturally, if you lift a book from the floor on top of the table you do work on it since you are applying a force through a distance.

However, I often see the example of carrying a book through a horizontal distance is not work. The reasoning given is this: The force you apply is in the vertical distance, countering gravity and thus not in the direction of motion.

But surely you must be applying a force (and thus work) in the horizontal direction as the book would stop due to air friction if not for your fingers?

Is applying a force through a distance only work if causes an acceleration? That wouldn't make sense in my mind. If you are dragging a sled through snow, you are still doing work on it, since the force is in the direction of motion. This goes even if velocity is constant due to friction.

Explanation:

8 0
2 years ago
Arrange the balls in order from greatest amount of gravitational potential energy to least
Aloiza [94]
F e d b c a
Hope this helps !!
6 0
3 years ago
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Which of the following equations describes photosynthesis?​
BigorU [14]

Answer:

The chemical equation for photosynthesis is 6CO2+6H2O→C6H12O6+6O2.

Explanation:

4 0
3 years ago
A __________ provides a visual summary of the improvements that a data mining project provides on a binary classification proble
babymother [125]

Answer:

Option (B)

Explanation:

A lift chart usually refers to a graphical representation that is mainly used in order to improve the drawbacks of a mining model by making a comparison with any random guess, and also helps in determining the changes that occur in terms of lift scores.

It describes the binary classification of the problems associated with the mining activity. This type of chart is commonly used to differentiate the lift scores for a variety of models, and picking the best one out of all.

Thus, the correct answer is option (B).

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3 years ago
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