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3 years ago

What is the velocity at 3 seconds?

Physics

1 answer:

Aliun [14]3 years ago

3 0

Velocity = (distance covered in a direction) / (time to cover the distance)

Since the y-axis is position (distance), the speed at 3 seconds is the slope of the graph at 3 seconds, and NOT its y-value.

The slope is fairly easy to pick off, because the graph is so straight from 2 sec to 5 sec. During that time, the distance shrinks by 10 meters (from 10m to zero). So the slope of that whole piece of the graph is (-10m) / (3 sec).

That's a slope of (10/3 m/s) or 3.33 m/s .

In answer to the question, we can only give the speed at 3 sec, not the velocity, since we have no information about the direction of the motion. Consequently, I would call the speed a positive number. But it's not worth arguing about, so you should just select <em>choice-A </em>and not make a big scene.

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Answer:

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Explanation:

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makkiz [27]

Explanation:

Given parameters:

Distance = 180m

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Unknown:

Speed in m/s and km/hr

Solution:

Speed is the distance divided by the time taken,

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So;

Speed = $\frac{180}{12}$ = 15m/s

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3600s = 1hr

Therefore;

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Answer:

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Explanation:

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