1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vikki [24]
2 years ago
8

Describe the ratio of kinetic energy and potential energy the skateboarder will have at each of the following points in her ride

. Also, explain how the mechanical energy changes throughout the ride if there are no non-conservative forces acting on the system.
- at the top of the ramp
- a quarter of the way down the ramp
- halfway down the ramp
- three-quarters of the way down the ramp
- at the bottom of the ramp

Be sure to support your response with evidence from the text.

Physics
1 answer:
amm18122 years ago
7 0

Answer:

no answer

Explanation:

You might be interested in
10. A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant
vladimir1956 [14]
The velocity of the ball is 30.0 m/s.
5 0
3 years ago
A roller coaster car speed is 4 m/s, but 3 seconds later its speed is 22 m/s. What is its average acceleration?
Juli2301 [7.4K]
The velocity increased from 4 m/s to 22 m/s in 3 seconds. 18 m/s in 3 seconds so the average acceleration is change in velocity divided by time. 18 m/s divided by 3 seconds = 6 m/s^2
6 0
3 years ago
Over a time interval of 1.99 years, the velocity of a planet orbiting a distant star reverses direction, changing from +20.7 km/
madam [21]

Answer:

(a) - 42700 m/s

(b) - 6.8 x 10^-4 m/s^2

Explanation:

initial velocity of star, u = 20.7 km/s

Final velocity of star, v = - 22 km/s

time, t = 1.99 years

Convert velocities into m/s and time into second

So, u = 20700 m / s

v = - 22000 m/s

t = 1.99 x 365.25 x 24 x 3600 = 62799624 second

(a) Change in planet's velocity = final velocity - initial velocity

  = - 22000 - 20700 = - 42700 m/s

(b) Accelerate is defined as the rate of change of velocity.

Acceleration = change in velocity / time

                     = ( - 42700 ) / (62799624) = - 6.8 x 10^-4 m/s^2

8 0
3 years ago
Which of the following processes charges an object by friction
Olenka [21]
An example is when u rub your pen on your hair hard that is friction
7 0
3 years ago
Read 2 more answers
Why can concave mirror is used in cosmetic mirror​
tatuchka [14]

Answer:

"When face is placed between the concave mirror and its focus, it produces a magnified image. This enlarged image of face is helpful in makeup as even pores of skin are clearly visible."

4 0
3 years ago
Other questions:
  • Three forces act simultaneously on point j. one force is 10 newton's north
    11·1 answer
  • Order the colors of the rainbow starting with the color that is bent the least to the color that is bent the most (when it passe
    6·1 answer
  • What do two troughs make when they meet
    12·1 answer
  • You push the ball with aforce of 22.8N which induces a -2.3N frictional force. What is the net force while you push?
    7·1 answer
  • HELP PLZ QUICK HELP PLZ QUICK HELP PLZ QUICK HELP PLZ QUICK
    7·2 answers
  • A baseball is thrown straight up from a building that is 25 meters tall with an initial velocity v = 10 m/s. How fast is it goin
    13·1 answer
  • What is the shape of a solid?
    10·1 answer
  • Which of the following is 8000 written in scientific notation?
    12·1 answer
  • Talent = Current in nuerons x Time ÷ Change in dogs body Temperature
    15·1 answer
  • A gas at 110atm and 303K filled a container of 2L. If the temperature is raised to 353 K and the pressure is increased to 440atm
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!