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
salantis [7]
3 years ago
11

A 750 kg car is moving at 20.0 m/s at a height of 5.0 m above the bottom of a hill when it runs out of gas. From there, the car

coasts. a. Ignoring frictional forces and air resistance, what is the car’s kinetic energy and velocity at the bottom of the hill
Physics
1 answer:
S_A_V [24]3 years ago
5 0

Answer:

Explanation:

Kinetic energy at the height = 1/2 m v²

= 1/2 x 750 x 20²

= 150000 J

Its potential energy = mgh

= 750 x 9.8 x 5

=36750 J

Total energy = 186750 J

Its total kinetic energy will be equal to 186750 J , according to conservation of mechanical energy

If v be its velocity at the bottom

1/2 m v² = 186750

v = √498

= 22.31 m /s

You might be interested in
Pleaseeee help!!!! I will mark you as brainlinest for correct answer!!!!!!!
GrogVix [38]
I do believe that the answer is D.  

Hope this is right! Have a great day! :-)
7 0
3 years ago
. A weather balloon is inflated to a volume of 2.2 x 103 L with 37.4 g of helium. What is the density of helium in grams per lit
Margarita [4]
That is the mst best eway to find its solution.
37.4/2.2*10^3 =  0.017 gm/liter or  1.7*10^-2
so we conclude that option b is sorrect
6 0
3 years ago
Why do temperatures on the moons surface vary ncyb more than temperatures on earth
ollegr [7]

Answer:

The moon has no atmosphere

Explanation:

The temperatures on the surface of the Moon vary much more than those on Earth because the moon has no atmosphere (third answer in the list), and therefore there are no molecules that could retain residual heat and make the change from day to night a softer transition.

5 0
3 years ago
A train traveled 350km in 2.5h. what was the average speed of the train?
MaRussiya [10]
Speed equals distance divided by time, so 350 divided by 2.5 equals 140 kilometers per hour.
3 0
3 years ago
Read 2 more answers
What are symptoms of Gomorrah
marishachu [46]
Consumed by Fire and Brimstone would be 1 symptom of Gomorrah lol
5 0
3 years ago
Other questions:
  • [OU.03] What is the best method to increase the accuracy of the parallax measurement of star distances?
    8·1 answer
  • Im bad at work problems can any one help with this problem ?
    12·1 answer
  • Mrs. LaCross leaves school and accidentally leaves her coffee mug on the roof of her car as shown in the picture below.
    12·1 answer
  • Velocity vs Time
    11·1 answer
  • What is the horizontal component of a ball thrown at a 27 degree angle at 16 m/s?
    10·1 answer
  • An archer shot a 0.07 kg arrow at a target. The arrow accelerated at 4,000 m/s2 to reach a speed of 50.0 m/s as it left the bow.
    9·2 answers
  • Connective Tissue in a tendon is
    9·1 answer
  • Mathew throws a ball straight up into the air. It rises for a period of time and then begins to drop. At which points in the bal
    9·1 answer
  • Explain Archimedes Principle
    14·1 answer
  • A student wants to make a scientific explanation regarding the wave model of electromagnetic radiation. Which of the following w
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!