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
Ulleksa [173]
4 years ago
5

F a roller coaster at six flags had a car with a mass of 400 kg and a velocity of 50m/s, calculate the kinetic energy of the rol

ler coaster
Physics
1 answer:
NemiM [27]4 years ago
4 0

Kinetic Energy = (1/2) (mass) (speed)²

KE = (1/2) (400 kg) (50 m/s)²

KE = (200 kg) (2500 m²/s²)

KE = 500,000 kg-m²/s²

<em>KE = 500,000 Joules</em>

KE = 1/2 Mega-Joule

You might be interested in
Calculate the speed of an 8.0x10^4 kg airliner with a kinetic energy of 1.1x10^9 j ...?
Over [174]
Kinetic energy is the energy possessed by an object on motion. it is expressed as follows:

KE = 0.5mv^2

where m is the mass and v is the velocity of the object. We calculate as follows:


KE = 0.5mv^2
1.1x10^9 J = 0.5(8.0x10^4 kg) v^2
v = 165.83 m/s
6 0
4 years ago
2.<br> What is the process that makes most elements called?
Dennis_Churaev [7]
Answer: Nucleosynthesis

Reason: the definition for this is “the is the process that creates new atomic nuclei from pre- existing nucleons”

Hope this helps
7 0
3 years ago
Car A has a mass of 1,000 kg and is traveling 60 km/hr. Car B has a mass of 2,000 kg and is traveling 30 km/hr. Compare the kine
Artyom0805 [142]

Answer:

c) Twice as much

Explanation:

As we know that kinetic energy is given by the formula

K = \frac{1}{2}mv^2

here we know that

m = mass of the object

v = speed of the object

so here we will have kinetic energy of Car A

K = \frac{1}{2}(1000)(60^2)

K_a = 1.8 \times 10^6

now we have kinetic energy of B is given as

K_b = \frac{1}{2}(2000)(30^2)

K_b = 0.9 \times 10^6

So kinetic energy of Car A is double that of Kinetic energy of car B

3 0
4 years ago
Read 2 more answers
A rock thrown with a velocity of 23.7 m/s horizontally off the top of a bridge falls 120 m to the water below. How far away does
Kipish [7]

Answer:

d=117.2845834m

Explanation:

Let's start out with the vertical components

vi=0, vf=?, a=9.8, x=120, t=?

Let's find how long the rock was falling.

x=vi*t+.5*a*t^2

120=0+.5*9.8*t^2

120=4.9*t^2

t=4.9487166s

Since we know the horizontal velocity is constant, we use the formula v=d/t

23.7=d/4.9487166

d=117.2845834m

8 0
2 years ago
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 5.20 km on the moon some 3840
Ksivusya [100]

Answer:

4.96cm

Explanation:

distance  = 5.20km = 5.2 × 10³ m

Wavelength , λ = 550nm = 5.50 × 10⁻⁷m

distance of moon, L = 384000 km = 3.84 × 10⁸m

formula for resolving power of two objects

d = (1.22 × λ ×L) / D

D = (1.22 × λ ×L) / d

    = (1.22 × 5.50 × 10⁻⁷ ×3.84 × 10⁸) / 5.2 × 10³

D = 4.96cm

7 0
3 years ago
Other questions:
  • What type of wall would make the best soundproof for room?
    6·1 answer
  • A boy is exerting a force of 70 N at a 50-degree angle on a lawn mower. He is accelerating at 1.8 m/s2. Round the answers to the
    7·2 answers
  • Under which condition does a light ray striking a concave mirror reflect off parallel to the principle axis ?
    6·2 answers
  • What is the pooled variance for the following two samples?
    13·1 answer
  • While unrealistic, we will examine the forces on a leg when one falls from a height by approximating the leg as a uniform cylind
    13·1 answer
  • A distant object will form what type of image on the retina of an emmetropic eye?​
    10·2 answers
  • In billiards, the 0.165 kg cue ball is hit toward the 0.155 kg eight ball, which is stationary. The cue ball travels at 5.8 m/s
    5·1 answer
  • The BEST description of a light-year is A) the speed of light in a vacuum. B) the age of a one-year-old star. C) the distance li
    6·1 answer
  • 27. The electric field around a positive charge is shown in the diagram. Describe the nature of these lines. Please use 2 conten
    13·1 answer
  • Derive the relation : P = DHG <br>pLZ FAST​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!