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
lara31 [8.8K]
3 years ago
14

A1.0 kg cart moving right at 5.0 -- on a frictionless track

Mathematics
1 answer:
bulgar [2K]3 years ago
6 0

Answer:

3.0 kg

Step-by-step explanation:

Momentum before collision = momentum after collision

m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂

(1.0 kg) (5.0 m/s) + m (-2.0 m/s) = (1.0 kg) (-4.0 m/s) + m (1.0 m/s)

5.0 kg m/s + m (-2.0 m/s) = -4.0 kg m/s + m (1.0 m/s)

9.0 kg m/s = m (3.0 m/s)

m = 3.0 kg

You might be interested in
1. f(x) = x; h(x) = 4x - 2
ExtremeBDS [4]

Answer:

=4x-2

Step-by-step explanation:

f=x, h=4x-2, f(x) *h(x): 4x-2

6 0
3 years ago
What is the perimeter of ^PQR with vertices P(-2,9) Q(7,-3) and R(-2,-3) in the coordinate plane?
lukranit [14]
Do I need to show my work?
6 0
3 years ago
Your heart beats 240 beats per 4 minutes at this rate how many times will your heartbeat in a hour
nydimaria [60]
3,600 hope this helps you
3 0
3 years ago
Read 2 more answers
Every​ week, Bob plays the guitar for three hours​, and his grade on each psych test is 75 percent. Last​ week, after playing fo
dsp73

Answer:

20% psyche test scores

Step-by-step explanation:

Given that every week, Bob plays the guitar for three hours​, and his grade on each psych test is 75 percent.

Last​ week, after playing for three hours​, Bob considered playing for an additional hour.

He decided to play for another hour and cut his study time by one​ hour, but last week his psych grade was 55 percent.

Bob​'s opportunity cost of the fourth hour of playing the guitar​

=His cut in scores in psyche test

=20%

4 0
3 years ago
Use quadratic equation to find the roots of the following equations
sertanlavr [38]
See the attachment below.

Hope it helps!

3 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the equation
    10·1 answer
  • A 33 m tall building casts a shadow. The distance from the top of the building to the tip of the shadow is 36 m . Find the lengt
    15·1 answer
  • Si f(x) = 1/2x^2-(1/4x+3),¿cuál es el valor de f(8)?<br> (3) 27<br> (2) 17<br> (4) 33<br> (1) 11
    11·1 answer
  • Multiple Choice, could somebody help me with this?
    6·1 answer
  • What are the answers?
    11·2 answers
  • 2) Find xif y =18<br> Y = 6x - 24
    14·2 answers
  • Using a pulley system, a crew does 7,500 J of work to load a box that requires 4,500 J of work. What is the efficiency of the pu
    15·1 answer
  • HELP ASAP ASAP I ONLY HAVE A FEW MINUTES LEFT!!!
    7·1 answer
  • I need help please help me
    10·1 answer
  • Can anyone help me answer this?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!