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
ratelena [41]
3 years ago
9

A computational model predicts the maximum kinetic energy a roller coaster car can have given its mass, the speed at the highest

point of its journey, and the height of the highest point. The mass is 250 kg, and the highest point of the journey is at 30m, where the cart is at rest. What is the maximum kinetic energy?
A. 113500 J
B. 468750 J
C. 0 J
D. 73500 J
Physics
1 answer:
Ymorist [56]3 years ago
3 0

Answer:

D

Explanation:

The decrease in potential energy is equal to the increase in kinetic energy.

mgh

250 x 9.8 x 30

=73, 500

You might be interested in
Which of the following cabinet departments protests us from terrorist attacks?
MariettaO [177]

Answer: A

Explanation:

5 0
3 years ago
What are forces that two objects apply on each other
liq [111]
Answer: Whenever two objects are touching, they usually exert forces on each other. The force of gravity, on the other hand, is an example of a force that exists between objects without them having to be in contact. Objects with mass exert forces on each other via the force of gravity.

HOPE IT HELPED:) HAVE A NICE DAY
3 0
3 years ago
A planet orbits a star, in a year of length 3.37 x 107 s, in a nearly circular orbit of radius 1.04 x 1011 m. With respect to th
PIT_PIT [208]

Answer

Given,

Time period of star,T = 3.37 x 10⁷ s

Radius of circular orbit,R = 1.04 x 10¹¹ m

a) Angular speed of the planet

   \omega = \dfrac{2\pi}{T}=\dfrac{2\pi}{3.37\times 10^{7}}

   \omega = 1.864\times 10^{-7}\ rad/s

b) tangential speed

   v = r \omega = 1.04\times 10^{11}\times 1.864 \times 10^{-7}

       v = 1.94 x 10⁴ m/s

c) centripetal acceleration magnitude

      a = \dfrac{v^2}{r}= \dfrac{(1.94\times 10^4)^2}{1.04\times 10^{11}}

          a = 3.62 x 10⁻³ m/s²

8 0
3 years ago
If two objects move farther apart from one another, the force of gravity will
jonny [76]
Gravity is universal. This force of gravitational attraction is directly dependent upon the masses of both objects and inversely proportional to the square of the distance that separates their centers. This means that as you move away from an object the gravitational force decreases.
4 0
3 years ago
Read 2 more answers
Which material has the highest melting point?
Arturiano [62]
Carbon at 3500 degrees
5 0
4 years ago
Other questions:
  • If Siobhan hits a 0.25 kg volleyball with 0.5 N of force, what is the acceleration of the ball?
    12·2 answers
  • PLEASE HELP ITS DUE IN 30 minutes!!! which two statements explain why a student standing at the top of a step stool doesnt move
    9·2 answers
  • What dating technique could scientists use to find the age of a meteorite?
    15·1 answer
  • Given a temperature of 25 Kelvin, what is the approximate temperature in degrees Celsius?
    10·2 answers
  • An object weighs 1200 newtons on a planet. what is the gravitational field strength of this planet if rthe object is 60 kilogram
    9·1 answer
  • If the energy in a wave increases or decreases what is going to increase or decrease
    9·1 answer
  • The mass number is determined by which particles?
    7·2 answers
  • Sound travels faster through rigid material like steel rather than through spongy materials like rubber. Why?
    8·1 answer
  • Power is work done over a what?
    7·1 answer
  • 1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!