Two hockey players, Z and X, are standing face-to-face and stationary on the ice. Skater Z has a mass of 72.5 kg. Skater X has a mass of 65.3 kg. Skater Z shoves Skater X. Which statement below best represents the skaters' momenta after the shove?

1. The momenta of the skaters after the shove are equal in magnitude but opposite in direction. Skater Z's mation is an ex. of recoil.

2. the momenta of the skaters after the shove are equal in magnitude and in direction.

3. the momenta of te skaters after the shove are equal in magnitude but opposite in direction. Skater q's motion is an ex of recoil.

4. the momenta of the skaters after the shove are of inverse proporion in magnitude and opposite in direction. the motion of both skaters are ex of recoil.

Question

Sasha

Physics

9 April, 03:20

Two hockey players, Z and X, are standing face-to-face and stationary on the ice. Skater Z has a mass of 72.5 kg. Skater X has a mass of 65.3 kg. Skater Z shoves Skater X. Which statement below best represents the skaters' momenta after the shove?

1. The momenta of the skaters after the shove are equal in magnitude but opposite in direction. Skater Z's mation is an ex. of recoil.

2. the momenta of the skaters after the shove are equal in magnitude and in direction.

3. the momenta of te skaters after the shove are equal in magnitude but opposite in direction. Skater q's motion is an ex of recoil.

4. the momenta of the skaters after the shove are of inverse proporion in magnitude and opposite in direction. the motion of both skaters are ex of recoil.

+1

Answers (1)

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Lucian · Answer 1

1. The momenta of the skaters after the shove are equal in magnitude but opposite in direction. Skater Z's mation is an ex. of recoil.

Explanation:

The moment is preserved before and after the push (impact), this is called conservation of the moment, skater x will move in the direction of the force of the push, but skater z will move in the opposite direction with a different speed, but retaining the initial moment imparted.

Recall that linear momentum is defined as the product of body mass by Velocity

P = m * v

where:

P = linear momentum [kg*m/s]

m = mass [kg]

v = velocity [m/s]