Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

Q: Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

Raising the highest point of the track to a higher pointExplanation:When the rubber ball starts its motion, from the highest point of the track, it has only gravitational potential energy, given by:where m is the mass of the ball, g is the gravitational acceleration and h is the height above the gro

Q: If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

The element is sodium. Atomic number is 11. Electron configuration is 2e- 8e- 1e-. Depends what reaction, because in a sodium and chloride reaction sodium loses 1 electron. Hope this helps

All Answers

✅ philkas414

Raising the highest point of the track to a higher point

Explanation:

When the rubber ball starts its motion, from the highest point of the track, it has only gravitational potential energy, given by:

U=mgh

where m is the mass of the ball, g is the gravitational acceleration and h is the height above the ground.

As the ball descends the track, this potential energy is partially converted into kinetic energy, given by:

$K=\frac{1}{2}mv^2$

(where m is the mass and v is the speed)

and partially lost as heat, due to the friction between the surface of the track.

As a consequence, the higher the initial height of the track (h in the formula), the greater will be the kinetic energy gained by the ball. A greater kinetic energy means a larger velocity, which also means that the ball will cover a longer distance before stopping.

✅ loganharper992

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

✅ tshaw04614

$efficiency \: = \frac{useful \: energy \: output}{total \: energy \: input} \ \times$ $100$ therefore, the efficiency is: $\frac{222}{222} \times 100$ $= 100\%$

✅ krayag

Uncle grandma

All Answers

Similar questions: Physics