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
valentina_108 [34]
3 years ago
15

A perfectly elastic collision occurs between a 15.0-kg mass traveling at 3.50 m/s and a 9.00-kg mass traveling at 2.35 m/s. if t

he final velocity of the 9.00-kg mass is 2.80 m/s, what is the final velocity of the 15.0-kg mass?
Physics
1 answer:
BaLLatris [955]3 years ago
5 0
Momentum is conserved in a collision. Momentum is mass*velocity, so you can find your answer by calculating initial and final momentums and setting them equal to each other.

15kg * 3.50 m/s + 9kg * 2.35 m/s = 73.65 kg m/s

73.65 = 9 * 2.8 + 15x

solve for x
x= 3.23

The final velocity is 3.23 m/s
You might be interested in
A 15-N force to the left and a 45-N force to the right act on a 10 kg object in opposite directions.
aleksley [76]

Answer:

daddy

Explanation:

6 0
3 years ago
Q: Riri wants to bake a cake. She adds flour, sugar, egg, baking soda, and yeast into a bowl and mixed them together. After all
babunello [35]

Answer:

I don't know what you mean about which changes occurred in this process but if its why the dough starts rising then its caused by the carbon dioxide in baking soda and yeast which is a fungus

8 0
3 years ago
Read 2 more answers
Li and Raj are playing football. They take turns trying to run past each other with the football. Li weighs 125 pound and Raj we
Elenna [48]

Answer:

Li has less mass and therefore less inertia, so he can change his motion more easily than Raj.

Explanation:

Inertia describes the resistance of an object to any change in its state of motion, and it depends on the mass of the object only. In particular:

- if an object has a large inertia (large mass), then it is more difficult to change its state of motion (i.e. to put it in motion, or to slow it down, or to change its direction of motion)

- if an object has small inertia (small mass), then it is more easy to change its state of motion

In this problem, Li has less mass than Raj, so he has less inertia, therefore he can change his motion more easily than Raj.

3 0
4 years ago
Read 2 more answers
Sience : What causes the different seasons on Earth?
olga2289 [7]
Earth would need to be tilted in its axis that causes seasons.
4 0
3 years ago
An object weighs 60.0 kg on the surface of the earth. How much does it weigh 4R from the surface? (5R from the center)
Alecsey [184]
"60 kg" is not a weight.  It's a mass, and it's always the same
no matter where the object goes.

The weight of the object is   

                                 (mass) x (gravity in the place where the object is) .

On the surface of the Earth,

                   Weight = (60 kg) x (9.8 m/s²)

                                =      588 Newtons.

Now, the force of gravity varies as the inverse of the square of the distance from the center of the Earth.
On the surface, the distance from the center of the Earth is 1R.
So if you move out to  5R  from the center, the gravity out there is

                    (1R/5R)²  =  (1/5)²  =  1/25  =  0.04 of its value on the surface.

The object's weight would also be 0.04 of its weight on the surface.

                 (0.04) x (588 Newtons)  =  23.52 Newtons.

Again, the object's mass is still 60 kg out there.
___________________________________________

If you have a textbook, or handout material, or a lesson DVD,
or a teacher, or an on-line unit, that says the object "weighs"
60 kilograms, then you should be raising a holy stink. 
You are being planted with sloppy, inaccurate, misleading
information, and it's going to be YOUR problem to UN-learn it later.
They owe you better material.
6 0
3 years ago
Other questions:
  • The original magnitude of the force on the Q charge was F; what is the magnitude of the force on the Q charge now?
    8·1 answer
  • A force does 30000 J of work along a distance of 9.5m. Find the applied force.
    8·1 answer
  • 3a and c someone please help I really don't understand
    11·1 answer
  • Problem 2: A string is wrapped around a uniform disk of mass M = 1.2 kg and radius R = 0.11 m. Attached to the disk are four low
    8·1 answer
  • ⦁ Which species do you think is best adapted to a diet of small, delicate seeds? Explain why you think so.
    8·1 answer
  • What is the voltage drop across the 30 q resistor? <br>A. 120 v <br>B. 30 V <br>c. 2 v <br>D. 60 V​
    6·1 answer
  • What is the other term of disruptive physical contact?​
    5·1 answer
  • Which is a characteristic of thermal energy transfer through convection?
    5·1 answer
  • A hiker travels 12 km in a direction of 50 degrees west of north. What are the north and west components of this displacement?
    8·1 answer
  • Suppose that we repeat the experiment, except that we place the sodium flame in a strong, localized electric field. The field ch
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!