Question

A linebacker with mass m1 = 90.0 kg running east at a speed v1 = 3.00 m/s tackles a fullback with mass m2 = 100. kg running north at a speed v2 = 5.00 m/s. The linebacker holds on to the fullback after the tackle, so that the collision is perfectly inelastic. The common speed of the players immediately after the tackle is closest to:

Answer 1

Given:

Mass of the linebacker,

The linebacker is initially running east or in the positive x-direction.

Initial velocity of the linebacker is 3m/s east.

----------------

Mass of the fullback,

The fullback is initially running north or in the positive y-direction.

Initial velocity of the fullback is 5m/s north.

--------------

Find the common speed after the collision

----------------

Consider the collision

During collision momentum is conserved

Initial momentum = Final momentum

------------

Magnitude:

ANSWER:

=============================