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
stiv31 [10]
3 years ago
7

A bumper cart has a mass of 200 kg and has a protective bumper around it that behaves like a spring. The spring constant is 5000

n/m. If the cart is moving at a speed of 8 m/s towards a solid barrier, and upon impact, is momentarily brought to rest.
a) How much elastic potential energy will be stored in the spring when it is fully compressed?

b) What is the average force exerted by the spring if it is compressed by a distance of 0.2 meters?
Physics
1 answer:
34kurt3 years ago
4 0
Part A:
For this part we’re assuming all the kinetic energy of the moving bumper car is converted into elastic potential energy in the spring since the car is brought to rest. Therefore you can find the total kinetic energy to get your answer:

KE = ½ mv^2
KE = ½ (200)(8)^2
KE = 6400 J

Part B:
Now you can use Hooke’s law to find the force:

F = kx
F = (5000)(0.2)
F = 1000 N
You might be interested in
What is the main difference between the following two velocities: 7 m/s and -7m/s?
Serjik [45]

The difference between the above velocities is that they exist in opposite direction of each other. or it can be said that they are negative vectors of each other.

7 0
2 years ago
A 6.0 m section of wire carries a current of 5.2 A from east to west in the earth's magnetic field of 1.0 × 105 T at a location
NNADVOKAT [17]
Well, since you only want direction, ignore the numbers. Use the right hand rule.
Current (pointer finger) points west (left). 
Magnetic field (middle finger) points south (towards you). 
Force (thumb) then points up (away from the earth)
4 0
3 years ago
Which type of place is rich in biodiversity?​
Vlad1618 [11]

Explanation:

hey

the answer is Brazil

hope it helps ✌

5 0
2 years ago
How many moles of He atoms are in 6.00 g of He?
S_A_V [24]

Answer:

Explanation:

9.5

4 0
2 years ago
Dua titik yang bermuatan listrik yang sama, mula-mula berjarak 5 cm dan saling tarik menarik dengan gaya 225 N. Agar kedua titik
Serggg [28]

Answer:

15 cm

Explanation:

Dari pertanyaan yang diberikan di atas, diperoleh data sebagai berikut:

Gaya 1 (F₁) = 225 N

Jarak terpisah 1 (d) = 5 cm

Gaya 2 (F₂) = 25 N

Jarak terpisah 2 (d₂) =?

Kita dapat memperoleh persamaan yang berkaitan dengan gaya dan jarak muatan dua titik dengan menggunakan rumus berikut:

F = Kq₁q₂ / d²

Perbanyak silang

Fd² = Kq₁q₂

Menjaga Kq₁q₂ konstan, kita memiliki:

F₁d₁² = F₂d₂²

Dengan rumus di atas maka diperoleh jarak sebagai berikut:

Gaya 1 (F₁) = 225 N

Jarak terpisah 1 (d) = 5 cm

Gaya 2 (F₂) = 25 N

Jarak terpisah 2 (d₂) =?

F₁d₁² = F₂d₂²

225 × 5² = 25 × d₂²

225 × 25 = 25 × d₂²

5625 = 25 × d₂²

Bagilah kedua sisinya dengan 25

d₂² = 5625/25

d₂² = 225

Hitung akar kuadrat dari kedua sisi

d₂ = √225

d₂ = 15 cm

Oleh karena itu, muatan dua titik harus berjarak 15 cm untuk memiliki gaya tarik 25 N

4 0
2 years ago
Other questions:
  • A sled is accelerating down a hill at a rate of 1 m s2 . If the mass of the sled is suddenly cut in half and the net force on th
    7·1 answer
  • Suppose the electrons and protons in 1g of hydrogen could be separated and placed on the earth and the moon, respectively. Compa
    6·1 answer
  • What are the effects of overpopulation on a specific species in an ecosystem?
    6·2 answers
  • which of these waves requires a medium to travel through light wave electromagnetic waves sound wave microwave
    14·2 answers
  • Find the kinetic energy of a 0.1-kilogram toy truck moving at the speed of 1.1 meters per second.
    14·1 answer
  • Which statement best explains the difference between velocity and speed?
    13·2 answers
  • Then it is called
    7·1 answer
  • 2. Two projectiles thrown from the same point at angles 0,=60° and 02=30° with the horizontal,
    5·1 answer
  • 8th grade science help help
    9·1 answer
  • 3. A 1500 kg car moving at 30 m/s strikes a 6000 kg van initially at rest. If the car
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!