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Alex
3 years ago
7

A man can use a snowblower to move snow in 5 minutes. If he moves it with a shovel, will take 20 minutes. He will use more power

with which process?
Physics
1 answer:
Neko [114]3 years ago
6 0

Answer:

the second process of using the the shovel to move the snow as it takes a longer time meaning more power is expended

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If a rock is dropped from the top of a tower at the front of it and takes 3.6 seconds to hit the ground. Calculate the final vel
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Answer:

35.28m/s; 63.50m

Explanation:

<u>Given the following data;</u>

Time, t = 3.6 secs

Since it's a free fall, acceleration due to gravity = 9.8m/s²

Initial velocity, u = 0

To find the final velocity, we would use the first equation of motion;

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Therefore, the final velocity of the penny is 35.28m/s.

To find the height, we would use the second equation of motion;

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S = 0 + 4.9*12.86

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because all objects fall at a rate of 9.8m/s²

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