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Zinaida [17]
3 years ago
5

What is the kinetic energy in joules of a 0.05. kg bullet traveling 310 m/s

Physics
1 answer:
Wittaler [7]3 years ago
3 0
The formula is=1/2(m x v^2)

so = 1/2*(0.05)*(310)^2

ans is =2402.5 joules
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Answer:

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3 years ago
A man of mass 50kg ascends a flight of stairs 5m high in 5 seconds. If acceleration due to gravity is 10ms-2, the power expended
Setler79 [48]

The power expended is 500 W

Explanation:

First of all, we start by calculating the work done by the man in order to ascend: this is equal to the gravitational potential energy gained by the man, which is

W=mg\Delta h

where

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\Delta h = 5 m is the change in height

Substituting,

W=(50)(10)(5)=2500 J

Now we can calculate the power expended, which is given by

P=\frac{W}{t}

where

W = 2500 J is the work done

t = 5 s is the time elapsed

Substituting, we find

P=\frac{2500}{5}=500 W

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brainly.com/question/7956557

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3 years ago
Which point or points of view could be present in a business letter?
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31) The basic concept of how a simple motor works is explained by which statement?
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Answer:

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Explanation:

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3 years ago
Read 2 more answers
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