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3 years ago

7

A runner can run a 400.0 meter lap in 50.0 seconds. He finishes at the same spot as he began. What is his average velocity?

2 answers:

cestrela7 [59]3 years ago

8 0

8 meters per second. To find velocity is to divide distance by total time. so 400/50.

Tom [10]3 years ago

5 0

Velocity: displacement/time
as he's back at the same spot, displacement=0
0/50= 0
hope this helps!

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Nimfa-mama [501]

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Explanation:

given data

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solution

first we get here final speed by using conservation of momentum that is express as

Mu = (M+m) V .......................1

put here value we get

1560 × 28 = (1560 + 1070 ) V

solve it we get

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put here value and we get

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3 years ago

4A. How high is a 12 kg monkey in a tree if it has 509 J of gravitational potential Energy?

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4A. PE = MxGxH. (You can consider g as 9.8 / 10m/s as well)

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Hope u got the answer....pls rate the answer if it is helpful for u....and I'm sorry I could not understand B part so I didn't do it.

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deff fn [24]

Answer:

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Explanation:

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3 years ago