1. Questions

Physics

19. Two people of unequal mass are initially standing still on the ice with negligible friction. They then simultaneously push each other horizontally. Afterward, which of the following is true? *
-The center of mass of the two person system moves in the direction of the less massive person.
-The momenta of the people are of equal magnitude.
-The less massive person has a smaller initial acceleration than the more massive person.
-The kinetic energies of the two people are equal.
-The speeds of the two people are equal.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
Lexie

  1. the momenta is the same in both direction. Newton's third law.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    👤
    bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    two skaters, each of mass 55 kg, approach each other along parallel paths separated by 3.8 m. They have opposite velocities of 1.9 m/s each. One skater carries one end of a long pole with negligible mass, and the second skater

  2. Physics

    Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible friction between his feet and the ice. A friend throws Olaf a ball of mass 0.400 kg that is traveling

  3. physics

    A 40-kg block of ice at 0°C is sliding on a horizontal surface. The initial speed of the ice is 7.0 m/s and the final speed is 4.7 m/s. Assume that the part of the block that melts has a very small mass and that all the heat

  4. physics

    In the figure, two skaters, each of mass 58.0 kg, approach each other along parallel paths separated by 2.79 m. They have opposite velocities of 1.50 m/s each. One skater carries one end of a long pole of negligible mass, and the

  1. PHYSICS

    Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 95 kg, and the mass of the woman is 55 kg. The woman pushes on the man with a force of 57 N due

  2. Physics

    An ice skater is gliding horizontally across the ice with an initial velocity of +6.3 m/s. The coefficient of kinetic friction between the ice and the skate blades is 0.081, and air resistance is negligible. How much time elapses

  3. Physics

    A 74.5 kg ice skater moving to the right with a velocity of 2.62 m/s throws a 0.21 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the

  4. physics

    The two masses in the Atwood's machine shown in the figure are initially at rest at the same height. After they are released, the large mass, , falls through a height and hits the floor, and the small mass, , rises through a

  1. physics

    A sled on ice moves in the ways described in the questions below. Friction is so small that it can be ignored. A person wearing spiked shoes standing on the ice can apply a force to the sled and push it along the ice.Which force

  2. physics

    You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. A friend throws you a 0.405 kg ball that is traveling horizontally at 11.5 m/s

  3. Physics help!!

    A Styrofoam bucket of negligible mass contains 1.60 kg of water and 0.425 kg of ice. More ice, from a refrigerator at -14.8 degree C, is added to the mixture in the bucket, and when thermal equilibrium has been reached, the total

  4. Physics

    A foam cooler of negligible mass contains 1.75 kg of water. Ice from a refrigerator at -15°C, is then added to the water in the cooler. When thermal equilibrium has been reached, the total mass of ice in the cooler is 0.778 kg.

View more similar questions or ask a new question.