A45 kg ice skater initially skating at a velocity of 3 m/s speeds up to a velocity of 5 m/s. calculate the difference in the magnitude of momentum of the skater.

90 kgm/s

Explanation:

The momentum (linear momentum) is given by the following equation:

Where:

is the mass of the skater

is the velocity

In this situation the skater has two values of momentum:

Initial momentum:

Final momentum:

Where:

So, if we want to calculate the difference in the magnitude of the skater's momentum, we have to write the following equation(assuming the mass of the skater remains constant):

Finally: