Why does the cyclist have less kinetic energy at position A than at position B?

1 answer:

6 0

Suppose that the cyclist begins his journey from the rest from the top of a wedge with a slope of a degree above the horizontal.
At point A (where it starts its journey), the energy is:
Ea = m * g * h
In other words, energy is only potential.
At point B (located at the bottom of the wedge), the energy is:
Eb = (1/2) * (m) * (v ^ 2)
In other words, the energy is only kinetic.
For energy conservation we have:
Ea = Eb
That is, we have that all potential energy is transformed into kinetic energy.
Which means that the cyclist has less kinetic energy at point A because that's where he has more potential energy.
answer:
the cyclist has less kinetic energy at point A because that's where he has more potential energy.

You might be interested in

An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad/s). If a particular disk is spun at 646.

lesya692 [45]

Answer:

Angular acceleration will be $1135.5rad/sec^2$

Explanation:

We have given initial angular speed of a particular disk $\omega _i=646.1rad/sec$

And it finally comes to rest so final angular speed $\omega _f=0rad/sec$

Time is given as t = 0.569 sec

From third equation of motion we know that

$\omega _f=\omega _i+\alpha t$

So angular acceleration $\alpha =\frac{\omega _f-\omega _i}{t}=\frac{0-646.1}{0.569}=1135.5rad/sec^2$

3 0

3 years ago

Carole is very tired and makes coffee. Why would Newton say that she must use her hand to pick up the cup? A) The idiom that eve

kozerog [31]

Carole is very tired and makes coffee. Newton would say that she must use her hand to pick up the cup, because an object at rest will stay at rest unless acted upon by an external force. <em>(B)</em>

5 0

3 years ago

Read 2 more answers

a school bus takes 0.50 hours to reach the school from your home. if the average speed of the bus is 20km/h, what is displacemen

Kazeer [188]

Answer:

10 km

Explanation:

.5 hr * 20 km/hr = 10 km

8 0

1 year ago

What time does the clock go back for daylight savings

Novosadov [1.4K]

Answer:

it goes back an hour from the time it was

6 0

2 years ago

]A nuclear power plant produces huge amount of electricity. However, it dumps radioactive wastes into the sea. This has led to a

katrin2010 [14]

The best and most correct answer among the choices provided by your question is the third choice or letter C.

The best method to solve the problem is: <span>Provide the nuclear power plant with a plan to properly dispose of and recycle the wastes. </span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

5 0

2 years ago

Read 2 more answers