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2 years ago

Please help me with this. Finding speed.

Physics

2 answers:

JulijaS [17]2 years ago

7 0

The speed is 80 m/h you find it by dividing the distance by time

Neporo4naja [7]2 years ago

4 0

What you need is a definition of average speed. Here it is:

   Average speed = (distance covered) / (time to cover the distance) .

For the race car in the question:

Average speed = (200 mile) / (2.5 hour)

   = (200 / 2.5) (mile/hour)

   =    80 miles per hour .

That doesn't seem all that fast for a race-car.
But the math is bullet-proof.

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3 years ago

A handful of professional skaters have taken a skateboard through an inverted loop in a full pipe. For a typical pipe with a dia

Bingel [31]

Answer

given,

diameter of the pipe is = (14 ft)4.27 m

minimum speed of the skater must have at very top = ?

At the topmost point of the pipe the normal force will be equal to zero.

F = mg

centripetal force acting on the skateboard

$F = \dfrac{mv^2}{r}$

equating both the force equation

$mg = \dfrac{mv^2}{r}$

$v = \sqrt{gr}$

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3 years ago

Explain how a battery works. What are some possible materials you could use to make a battery for a circuit?

allochka39001 [22]

Answer:

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Explanation:

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2 years ago

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