One ball has 7 times the mass and twice the speed of another.

1. How does the momentum of the more massive ball compare to the momentum of the less massive one? Find the ratio of the momenta.

2. How does the kinetic energy of the more massive ball compare to the kinetic energy of the less massive one? Find the ratio of the kinetic energies

  1. 👍
  2. 👎
  3. 👁
  1. 7 m * 2 v = 14 m v

    (1/2)(7m)(2v)^2 = (1/2)(7)(4) mv^2
    = 28 * (1/2)m v^2

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A tennis ball has a mass of 0.057 kg. A professional tennis player hits the ball hard enough to give it a speed of 52 m/s (about 117 miles per hour.) The ball moves toward the left, hits a wall and bounces straight back to the

  2. Physics

    A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-fourth its original speed. What is the mass of the second ball?

  3. physics

    A softball of mass 0.220 kg that is moving with a speed of 6.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward

  4. Physics

    A girl of mass 55 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s, and it bounces back with the same speed. The ball is in contact with the wall 0.05 s. What is the

  1. Physics

    A blue and a green billiard ball, each with a mass of 0.15 kg, collide directly. Before the collision, the blue ball had a speed of 3 m/s while the green ball had a speed of 2 m/s. After the collision, the green ball stays in

  2. Physics

    A 3.32 kg mud ball has a perfectly inelastic collision with a second mud ball that is initially at rest. The composite system moves with a speed equal to one-eighth the original speed of the 3.32 mud ball. What is the mass of the

  3. physics

    A billiards ball of mass 0.4⁣kg strikes another, initially stationary ball of the same mass. The first ball is deflected and travels at an angle of 30∘ with its original direction. Its initial speed was 12⁣m/s and after the

  4. Physics

    2. Consider the ball example in the introduction when a ball is dropped from 3 meters. After the ball bounces, it raises to a height of 2 meters. The mass of the ball is 0.5 kg a. What is the speed of the ball right before the


    1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to

  2. Physics

    A 0.100 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a).what is the mass of the second ball? (b).What fraction

  3. Physics

    You are lawn bowling and bowl a ball with a speed of 5.00 m/s. Unfortunately, your ball hits a large rock of mass 400 g, resulting in a perfectly elastic collision. If the final velocity of the ball after the collision is -2.93

  4. Physics

    If a ball is thrown directly upwards with twice the initial speed of another, how much higher will it be at its apex? A) 8 times D) 2 times B) 4 times E) 2 times C) 2 2 times Please show any equations that are used :)

You can view more similar questions or ask a new question.