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
Zina [86]
2 years ago
13

A particular roller coaster has a mass of 3500 kg, a height of 4.0 m, and a velocity of 12 m/s. What is the kinetic energy? If n

eeded, use g= 10. m/s^2
Physics
1 answer:
Alenkinab [10]2 years ago
8 0

Explanation:

given

m=3500kg,h=4.0m,v=12m/s

ke=½mv²

½×3500×12²=3500×144÷2

=252,000j or 252j

You might be interested in
The lightbulb is an example of
AlexFokin [52]
A object that has been reinvented so it is more energy efficient
4 0
3 years ago
A rocket is fired at 100 m/s at an angle of 37, how many seconds did it take to get to the top?
Kobotan [32]

Answer:

6.14 s

Explanation:

The time the rocket takes to reach the top is only determined from its vertical motion.

The initial vertical velocity of the rocket is:

u_y = u sin \theta = (100)(sin 37^{\circ})=60.2 m/s

where

u = 100 m/s is the initial speed

\theta=37^{\circ} is the angle of launch

Now we can apply the suvat equation for an object in free-fall:

v_y = u_y +gt

where

v_y is the vertical velocity at time t

g=-9.8 m/s^2 is the acceleration of gravity

The rocket reaches the top when

v_y =0

So by substituting into the equation, we find the time t at which this happens:

t=-\frac{u_y}{g}=-\frac{60.2}{-9.8}=6.14 s

7 0
3 years ago
Les propriétés de l’air?
crimeas [40]

Answer:

Lorsque l'on détend l'air son volume augmente et sa pression diminue. L'air qui est un mélange de gaz est compressible et expansible. – Lorsque l'on comprime l'air, son volume diminue et sa pression augmente. – Lorsque l'on détend l'air, son volume augmente et sa pression diminue.

4 0
2 years ago
Which statement about an object in motion is correct? <br> Help
Nostrana [21]
Where are the statements?
7 0
3 years ago
If an object's mass increases, its------------------------- can be increased
otez555 [7]

Answer:

both kinetic energy and potential energy

7 0
3 years ago
Other questions:
  • The maximum energy a bone can absorb without breaking is surprisingly small. Experimental data show that both leg bones, togethe
    5·1 answer
  • A remote-controlled car runs on a 9V battery.  If a 1.5A current is running through the circuit, what resistance is the car prov
    14·1 answer
  • HELP!!!
    8·2 answers
  • When air is blown across the top of an open
    14·1 answer
  • A ramp is used to lift a refrigerator a height of 12 m with a force of 110 N. The ramp is at an angle of 50° to the ground.How m
    10·1 answer
  • Photosynthesis and respiration are best described as
    15·2 answers
  • What can you infer from the fact that metals are good conductors of electricity?
    12·2 answers
  • 44. A mediados de la década de 1960, la McGill University lanzó sensores metereológicos de gran altitud al dispararlos desde un
    13·1 answer
  • A 15kg penguin slides on its belly down an icy, frictionless glacier. If the penguin started from rest and reaches a speed of 11
    5·1 answer
  • A projectile is fired in such a way that its horizontal range is equal to three times its maximum height. What is the angle of p
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!