madyson1972
contestada

Two ice hockey players are skating. The first has a mass of 87kg and is skating at a constant speed of 2.6 m/s. The second skater has a mass of 78kg. How fast does the second skater have to be in order to have a momentum similar to the first skater ?

Respuesta :

quasarJose

Answer:

2.9m/s

Explanation:

Given parameters:

Mass 1  = 87kg

Speed 1  = 2.6m/s

Mass 2 = 78kg

Unknown:

Speed 2  = ?

Solution:

Momentum is the amount of motion a body possesses.

  Momentum  = mass x velocity

  Momentum of skater 1  = Momentum of skater 2

 So;

        87 x 2.6   = 78 x speed 2

    Speed 2 = 2.9m/s