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
solniwko [45]
2 years ago
8

If the potential energy of a roller coaster is 60,000 J at the highest point, what is its kinetic energy at the lowest point?

Physics
1 answer:
VladimirAG [237]2 years ago
8 0

Answer:

60 000 J

Explanation:

The PE will be converted to KE entirely (if the lowest point is ground level)

You might be interested in
a car is moving 8.80 m/s when it begins to accelerate at 2.45 m/s^2. how much time does it take to trav 138m. please help me (':
Ulleksa [173]

Answer:

7.6 s

Explanation:

Considering kinematics formula for final velocity as

v^{2}=u^{2}+2as

Where v and u are final and initial velocities, a is acceleration and s is distance moved.

Making v the subject then

v=\sqrt{u^{2}+2as}

Substituting 8.8 m/s for u, 138 m for s and 2.45 m/s2 for a then

v=\sqrt{8.8^{2}+2*2.45*138}\\v=27.45 m/s

Also, v=u+at and making t the subject of the formula

t=\frac {v-u}{a}

Substituting 27.45 m/s for v, 8.8 m/s for u and 2.45 m/s for a then

t=\frac {27.45-8.8}{2.45}=7.6122448979591\approx 7.6s

Therefore, it needs 7.6 seconds to travel

7 0
3 years ago
D section a only still need help on this
SIZIF [17.4K]

Acceleration means speeding up, slowing down, or changing direction. The graph doesn't show anything about direction, so we just have to examine it for speeding up or slowing down ... any change of speed.

The y-axis of this graph IS speed. So the height of a point on the line is speed. If the line is going up or down, then speed is changing.

Sections a, c, and d are all going up or down. Section b is the only one where speed is not changing. So we can't be sure about b, because we don't know if the track may be curving ... the graph can't tell us that. But a, c, and d are DEFINITELY showing acceleration.

5 0
3 years ago
When drawing ray diagrams involving thin lenses, how many rays (at a minimum) are needed show the image distance and magnificati
Rufina [12.5K]

Answer:

GGG he fggfggfufbvg I Rd cbh

6 0
3 years ago
The role of learning in motivation is most obvious from the influence of<br><br>​
photoshop1234 [79]

Answer:

Your answer should be Incentives

Explanation:

7 0
3 years ago
Find the momentum of a train with a mass of 850 kg and forward velocity of 15 m/s
LenKa [72]

Answer:

12,750

Explanation:

P = mv

Momentum = Mass x Velocity

Plug it in and finish equation

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the smallest accurate measurement that can be made with an instrument?
    13·1 answer
  • A softball is fouled off with a vertical velocity of 20 m/s and a horizontal velocity of 15 m/s. what is the resultant velocity
    5·1 answer
  • Defined the term electromagnetic induction and explain how a generator uses electromagnetic induction​
    10·1 answer
  • if a car is traveling at an average speed of 60 kilometers per hour, how long does it take to travel 12 kilometers?
    9·1 answer
  • A person standing in the moon's "blank" would see a total solar eclipse ​
    12·2 answers
  • A dock worker applies a constant horizontal force of 80.5 N to a block of ice on a smooth horizontal floor. The frictional force
    12·1 answer
  • the maximum displacement of a particle, within a wave, above or below its equilibrium position, is called__________
    5·2 answers
  • 6. A yo-yo with a mass of 0.5 kg is tied to a radius of 2 m and is spinning at 3 m/s. What
    5·1 answer
  • A solid weighs 237.5 g in air and 12.5 g in a liquid in which it is wholly submerged. The density of the liquid is 900 kg/m³.
    15·1 answer
  • How can you justify that force is transferred to lift and throw soil using shovel?<br>​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!