Part A An object that is initially at rest on a frictionless floor is struck by

Question

Part A

An object that is initially at rest on a frictionless floor is struck by a flying rock with an impulse JFonOx. What is the final momentum of the object?

An object that is initially at rest on a frictionless floor is struck by a flying rock with an impulse . What is the final momentum of the object?

Part B

A 1.0-kg block moving to the right at speed 3.0 m/s collides with an identical block also moving to the right at a speed 1.0 m/s. Both blocks stick together and move to the right. What is their speed after collision?

A 1.0- block moving to the right at speed 3.0  collides with an identical block also moving to the right at a speed 1.0 . Both blocks stick together and move to the right. What is their speed after collision?

Explanation / Answer

Part (A): Answer 1st.

Initial momentum, Poix =0,

ImpulseJFonOx = F(delta (x)),

Final momentum Pofx= JFonOx =F(delta (x))

Part B. Answer 2nd.

Momentum of mass-1

P1= m*3= 3m

Momentum of mass-2

P2=m*1= m

Final speed of mass1, mass2

v=(3m+m)/(m+m)

=2

Final moentum of mass-1

=mv=2m

Final moentum of mass-1

=mv=2m

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