I have a two-part  Energy and Momentum Questions

 

Part 1) Two-Dimensional Collisions

1. A 120 kg object moving at 10 m/s [E30^oS] strikes a 231 kg ball moving at 15 m/s [E40^oN]. After the collision, the 120 kg object heads off at 13.5 m/s in a direction of [E25^oN]. What is the velocity of the other ball after the collision?

 

 

Part 2) Special Equations for Elastic Collisions

(see attachment - 3 questions)

 

1. A 25 DDD kg railroad car is moving with a velocity of 4.UD mls [R]. It collides and couples with a
chain of three other railroad cars {each of the same mass} moving in the same direction at 2.0
mls. What is the velocity of the coupled cars immediately after the collision? How much kinetic
energy is lost in the collision? [4 marks] 2. Two bloclrs are free to slide along a frictionless . _
traclr as sham. The bloclr of mass m, = it? try is '_._ it released from rest from a height of It? m. _ _
Protrudlng from its front end is the south pole of a I strong magnet. repelling the south pole of an
identical magnet embedded in the basic end ofbloclr m2 of mass 3t] lrg: this bloclt is moving at 1.0 refs {Riiust prior to the collision. The two bloclrs never touch during this elastic collision. To what
vertical height does rnf rise after the collision? {B marks) 3. A bullet of mass it? g and speed it passes completely through a pendulum bob of mass 20d g.
initiallyr at rest. The bullet emerges from the pendulum bob with a speed 395v. The pendulum is
attached to a stlli' rod of length it?! m whose mass is negligible. What is the minimum value of v'
such that the pendulum bob will barely swing through a complete vertical circle? [’8 marirsi

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