Question

In: Physics

A fullback with a mass of 116 kg and a velocity of 2.7 m/s due west...

A fullback with a mass of 116 kg and a velocity of 2.7 m/s due west collides head-on with a defensive back with a mass of 89 kg and a velocity of 6 m/s due east.
(a) What is the magnitude of the fullback's initial momentum?
(b) What is the direction of the fullback's initial momentum?
(c) What is the magnitude of the defensive back's initial momentum?
(d) What is the direction of the defensive back's initial momentum?
(e) What is the magnitude of the total momentum of the system?
(f) If they stick together and external forces can be ignored, what direction will they be traveling immediately after they collide?

Solutions

Expert Solution

Given mass of fullback,

Lets take east as positive direction

Initial velocity of fullback,

mass of defensive back,

Initial velocity of defensive back,

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

(a) What is the magnitude of the fullback's initial momentum?

ANSWER :

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

(b) What is the direction of the fullback's initial momentum?

Initial velocity of fullback,

Negative, So direction is towards west

ANSWER : WEST

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

(c) What is the magnitude of the defensive back's initial momentum?

ANSWER :

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

(d) What is the direction of the defensive back's initial momentum?

Initial velocity of defensive back,

Positive, So direction is towards east

ANSWER : EAST

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

(e) What is the magnitude of the total momentum of the system?

ANSWER :

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

(f) If they stick together and external forces can be ignored, what direction will they be traveling immediately after they collide?

During collision total momentum is conserved

Initial momentum =Final momentum

Final velocity is positive, So towards east

ANSWER :EAST

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

genius_generous answered 3 months ago
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