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lisabon 2012 [21]
2 years ago
5

A girl runs once around a circular track with a radius of 100m at speed of 10m/s.

Physics
1 answer:
goblinko [34]2 years ago
5 0

Answer:

0 m

Explanation:

Displacement is the shortest distance from one ppont to another. Here, the girl returns to the same spot after running. Hence, displacement is <u>0</u><u> </u><u>m</u>.

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<u>Answer:</u>

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<u>Explanation</u>:

Consider the initial speed of the semi-trailer be v

Then, initial kinetic energy = \frac{1}{2} mv^2

According to question, the semi-trailer coast along a ramp, which is inclined at an angle of 170, and to a distance of 160m to stop

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