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
ANEK [815]
3 years ago
10

A 1400 kg car moving +13.7 m/s makes an elastic collision with a 3200 kg truck, initially at rest. What is the velocity of the c

ar after the collision?
Mathematics
1 answer:
Kamila [148]3 years ago
7 0

Answer:

The velocity of the car after the collision is -5.36 m/s

Step-by-step explanation:

An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.

let the following:

m₁ = mass of the car = 1400 kg

m₂ = mass of the truck = 3200 kg

u₁ = velocity of the car before collision = 13.7 m/s

u₂ = velocity of the truck before collision = 0 m/s

v₁ = velocity of the car after collision

v₂ = velocity of the truck after collision

v₁ = [ u₁ * (m₁ - m₂) + u₂ * 2m₂ ]/ (m₁ + m₂)

   =  [ 13.7 * (1400 - 3200) + 0 * 2 * 3200 ]/ (1400 + 3200)

   = - 5.36 m/s

So, <u>the velocity of the car after the collision is -5.36 m/s</u>

You might be interested in
Please answer this correctly
aleksklad [387]

Answer:

63.2 = y

Step-by-step explanation:

The perimeter is the sum of all the sides

P = 7.8+ y+37.6 + y

171.8 = 7.8+ y+37.6 + y

Combine like terms

171.8 = 45.4 + 2y

Subtract 45.4 from both sides

171.8-45.4 = 45.4 + 2y -45.4

126.4 = 2y

Divide each side by 2

126.4/2 = 2y/2

63.2 = y

6 0
2 years ago
Find the slope of a line whose equation is 3X+6Y=9
Lisa [10]

To find the slope of the above equation, it is easiest to put it into slope-intercept form, y=mx + b, where the variable m represents the slope. To do this, we must isolate the variable y on the left side of the equation by using the reverse order of operations. First, we should subtract 3x from both sides of the equation.

3x + 6y = 9

6y = -3x + 9

Next, we should divide both sides of the equation by 6 to undo the coefficent of 6 on the variable y.

y = -1/2x + 3/2

Therefore, the slope of the line is -1/2 (the coefficient of the variable x in slope-intercept form).

Hope this helps!

8 0
3 years ago
The population of a city decreases by 1.2% per year. If this year's population is 177,000, what will next year's population be,
Vsevolod [243]

Answer:

Initial value

177000

Final value

174,876

Decrease

1.2%

Difference

-2,124

5 0
2 years ago
Can someone please help with this??
Makovka662 [10]

-z=14-x+5y

z=x-5y-14

Solved

4 0
3 years ago
Read 2 more answers
AB is Tangent to circle O at B. if AB = 7 and AO = 17.4, what is the length of radius r to the nearest tenth?
irakobra [83]
The angle the radius makes with AB is a right angle, so the Pythagorean theorem applies.
  r² = 17.4² - 7² = 253.76
  r = √253.76 ≈ 15.9

The length of radius r is about 15.9.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The number of 1 inch cubes that will fit into a box that is 7 inches wide blank inches long and 1 inch high is 154
    14·1 answer
  • Help to solve -2 = -n + 8
    14·1 answer
  • Find the area and the perimeter of the figure <br><br> Answe ASAP test ina couple minutes
    9·2 answers
  • Trains headed for destination A arrive at the train station at 15-minute intervals starting at 7:00 am, whereas trains headed fo
    14·1 answer
  • HELLLLLLLLLLLPPPPPPPPPP
    15·1 answer
  • A group of 8 people went out to lunch. The amount earn spent is shown in the table, Amount Spent Person on Lunch Brandon $12.00
    9·1 answer
  • 75/6 hasta que el residuo sea cero
    7·1 answer
  • 2. Ricky went to the supermarket and buy ice cream for 12 pesos, bread for 8 pesos and milk for 15 pesos. How much money does he
    12·1 answer
  • A school administrator brought 6 desk sets. Each set consists of one more table and one chair. if he paid a total of $663 for th
    12·1 answer
  • Jenna’s car can travel 15 miles on 300 gallons of gas. How far can it travel on 18 gallons of gas?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!