Question

1. Two asteroids collide head-on and stick together. Before the collision, asteroid A (mass 1,000 kg) moved at 100 m/s and asteroid B (mass 2,000 kg) moved at 80 m/s in the opposite direction. Use momentum conservation (make a complete Momentum chart) to find the velocity of the asteroids after the collision.

2. Two asteroids identical to those in (1) collide at right angles and stick together. "Collide at right angles" means that their initial velocities were perpendicular to each other. You can assume that asteroid A initially moved to the right and Asteroid B initially moved up. Use the momentum conservation model (make a complete momentum chart) to find the velocity (magnitude and direction, expressed as the angle with the initial velocity vector of Asteroid A) of the asteroid after the collision.

3. Determine the decrease in total kinetic energy of the two asteroids in (1) and (2) when they collide. If the average specific heat of the material composing the asteroids is assumed to be that of ice (2.05 kj/kgC), by how much does the temperature of the asteroids rise as a result of the collision in each case?

Momentum Conservation Model Graphical Representation: The Momentum Chart Closed System Typically used for collisions/interactions in- volving two or more objects. Open System Typically used when the phenomenon in- volves a net impulse acting on the system. beginning end beginning end initial conditions final conditions initial conditions final conditions Closed DiApps Apps system Open plő system Total System Object 1 Object 2 Total System 0 For total system: Ap=0 For each object: Pi + Ap = For total system: Δρ = ΣΙ Pi + Ap=ps

Answer 1

m - 1000kg m. - 2000kg u = 100 ms u = soms using comervation of mass mutmal = (mitm) (1000) (100) +2000 (-80) = (3000) - - 20 mp combined velocity = zonis in desection of moss me