ZuoTi.Pro
Question

One runner has a mass of 40 kg, while another has a mass of 80 kg....

One runner has a mass of 40 kg, while another has a mass of 80 kg. The two runners have the same kinetic energy. Is one running faster than the other? If yes, which one, and by what factor is her speed greater?
science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Kinetic Energy of mass 40kg (m. ) K.E, = I m, 0,2 Kinetic Energy of mass 80kg me) K.E = 4 meuz? Kinetic Energies are same K:

0 0
Add a comment
Know the answer?
Add Answer to:
One runner has a mass of 40 kg, while another has a mass of 80 kg....
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • QUESTION 1 Two skaters, one of mass 80 kg, the other of mass 40 kg, are...

    QUESTION 1 Two skaters, one of mass 80 kg, the other of mass 40 kg, are standing next to each other on frictionless ice rink. The 40 kg skater pushes the 80 kg skater. After the push, the 80 kg skater is going at 1 m/s. How fast and in what direction is the 40 kg skater going after the push? (HINT: use the fact that since there are no external forces, the velocity of the center of mass of...

  • Two air-track carts move toward one another on an air track. Cart 1 has a mass...

    Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.39 kg and a speed of 0.99 m/s. Cart 2 has a mass of 0.64 kg. PART A What speed must cart 2 have if the total momentum of the system is to be zero? Express your answer using two significant figures. PART B Since the momentum of the system is zero, does it follow that the kinetic energy of the system is...

  • Two objects have the same kinetic energy. One has a speed that is 2.1 times greater...

    Two objects have the same kinetic energy. One has a speed that is 2.1 times greater than the speed of the other. What is the ratio of their masses? (Let m1 be the slower object and m2 be the faster.) m1/m2 =

  • One bullet has twice the mass of a second bullet. If both are fired so that...

    One bullet has twice the mass of a second bullet. If both are fired so that they have the same speed, which has more kinetic energy? What is the ratio of the kinetic energies of the two bullets? Options: - The one with the greatest mass has more kinetic energy but the reason for these energies cannot be predicted - the one with twice the mass has greater kinetic energy and the reason for these energies is equal 2. -...

  • True or False. While going at a constant speed, a 6 kg mass accumulates another 6...

    True or False. While going at a constant speed, a 6 kg mass accumulates another 6 kg making it a total of 12 kg. The change in kinetic energy is zero.

  • Use g = 9.8 m/s? Block A (mass 40 kg) and block B (mass 80 kg)...

    Use g = 9.8 m/s? Block A (mass 40 kg) and block B (mass 80 kg) are connected by a string of negligible mass as shown in the figure. The pulley is frictionless and has a negligible mass. If the coefficient of kinetic friction between block A and the incline is k = 0.21 and the blocks are released from rest, determine the change in the kinetic energy of block A as it moves from C to D, a distance...

  • Two carts mounted on an air track are moving toward one another. Cart 1 has a...

    Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 1.2 m/s and a mass of 0.45 kg. Cart 2 has a mass of 0.62 kg. (a) If the total momentum of the system is to be zero, what is the initial speed of Cart 2 in meters per second? m/s (b) Does it follow that the kinetic energy of the system is also zero since the momentum of the system is...

  • Two carts mounted on an air track are moving toward one another. Cart 1 has a...

    Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 1.1 m/s and a mass of 0.46 kg. Cart 2 has a mass of 0.74 kg (a) If the total momentum of the system is to be zero, what is the initial speed of Cart 2 in meters per second? m/s (b) Does it follow that the kinetic energy of the system is also zero since the momentum of the system is...

  • Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.53...

    Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.8 m/s and a mass of 0.53 kg. Cart 2 has a mass of 0.71 kg. (a) If the total momentum of the system is to be zero, what is the initial speed of Cart 2 in meters per second? m/s (b) Does It follow that the kinetic energy of the system is also zero since the momentum of the system is...

  • This problem will review one of the questions in the ideal gas, but with numbers: You...

    This problem will review one of the questions in the ideal gas, but with numbers: You have one container of hydrogen, and another container of oxygen. The number of molecules, temperature and volume are the same for both gases. Oxygen is, however, heavier than hydrogen.   How does the average kinetic energy of hydrogen compare to oxygen? Hydrogen has LARGER average kinetic energy than oxygen. Hydrogen has THE SAME average kinetic energy as oxygen. Hydrogen has LESS average kinetic energy than...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT