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
Directions: Using the T-chart below, compare balanced forces and unbalanced forces.
Salsk061 [2.6K]

Explanation:

unbalanced: a turning vehicle, apple falling on the ground, kicking a ball

balanced: floating on water, fruit hanging from tree, tug of war equally balanced teams

8 0
2 years ago
Juan wants to dilute a 5 molar solution of sulfuric acid down to a 1 molar solution. What would be the best way for him to do th
Sophie [7]
Add 100 ML of sulfuric acid to 400 ML of base as an 80H B.
8 0
3 years ago
Read 2 more answers
What apparatus is used to measure salt and water <br>​
AlexFokin [52]

Answer:

Salinometer, also called salinimeter or salimeter, device used to measure the salinity of a solution. It is frequently a hydrometer that is specially calibrated to read out the percentage of salt in a solution.

Explanation:

I hope it is correct answer

7 0
2 years ago
Read 2 more answers
if 1.5kg block is pulled across a horizontal surface that has a coefficient of kintic friction of 0.60. if a block is pulled by
inysia [295]

Answer:

3.2N

Explanation:

Given parameters:

Mass of block  = 1.5kg

Coefficient of kinetic friction  = 0.6

Force of pull on block  = 12N

Unknown:

Net force on the block  = ?

Solution:

Frictional force is a force that opposes motion:

  Net force  = Force of pull  - Frictional force

 Frictional force  = umg

   u is coefficient of kinetic friction

   m is the mass

    g is the acceleration due to gravity

 Frictional force  = 0.6 x 1.5 x 9.8  = 8.8N

 Net force  = 12N  - 8.8N  = 3.2N

4 0
3 years ago
The volume and the mass of substance are 15cm3 and 27 gm respectively find its density​
harina [27]

Answer:

d=1.8\ g/cm^3

Explanation:

Given that,

Mass, m = 27 grams

Volume of the substance, V = 15 cm³

We need to find the density of the substance. We know that, the density of an object is given by mass per unit volume. So,

d=\dfrac{m}{V}\\\\d=\dfrac{27}{15}\\\\d=1.8\ g/cm^3

So, the density of the substance is equal to 1.8\ g/cm^3.

8 0
3 years ago
Other questions:
  • When a submarine dives to a depth of 5.0 × 102 m, how much pressure, in pa, must its hull be able to withstand? how many times l
    12·2 answers
  • The Global Positioning System (GPS) is a constellation of about 24 artificial satellites. The GPS satellites are uniformly distr
    11·1 answer
  • " A bowl of soup at 200Á F. is placed in a room of constant temperature of 60Á F. The
    13·1 answer
  • Solve the equation 3x^2+8x+5=0
    5·1 answer
  • A 55 kilogram person jumps off a cliff and hits the water 5.8 seconds later, how high is the cliff above the water?
    6·1 answer
  • The pressure inside a sealed container of methane gas (CH4) is 35.0 kPa. If this 80.0 L sample
    5·1 answer
  • A student initially 10.0 m East of his school walks 17.5 m West. The magnitude of the student's displacement, relative to the sc
    13·1 answer
  • If you wanted to soundproof your bedroom, the best material to line the walls would be
    12·1 answer
  • A bike travels at 20mph for 5 hours, then 10 mph for 3 hours. What is the average speed?
    13·1 answer
  • Two objects perform the same task. One has thousands of moving parts while the other has no moving parts. What are they?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!