The mass of the ball is 3 times the mass of the puck, and the speed of the ball is 6 times less than the speed of the puck.

| March 7, 2021 | education

The mass of the ball is 3 times the mass of the puck, and the speed of the ball is 6 times less than the speed of the puck. What is the ratio of the modulus of momentum of the ball to the modulus of momentum of the puck?

mm = 3 * mw.

Vm = Vsh / 6.

Pm / Psh -?

The momentum of a body P is a vector physical quantity equal to the product of the mass of the body m by the speed of its movement V: P = m * V. The impulse of the body is directed in the same way as the speed of the body.

Let us express the impulse of the ball and the impulse of the puck: Rm = mm * Vm = 3 * msh * Vsh / 6 = msh * Vsh / 3, Rsh = msh * Vsh.

Pm / Psh = mm * Vm / mw * Vsh = 3 * mw * Vsh / 6 * mw * Vsh = 1/3.

Answer: the impulse of the ball Pm is 3 times less than the impulse of the washer Psh: Pm / Psh = 1/3.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.