Question

Two marbles (m = 0.050 kg each) moving on a table TOWARDS each other with the speed of 0.3 m/s collide, and start moving away from each other.

a) What is the total momentum of this system before the collision?

V1 = 0.3 m/s, V2 = -0.3 m/s,

p1 = 0.015 kg m/s, p2 = -0.015 kg m/s,

ptotal = 0 kg m/s

1. Work:

P1 = (0.05 kg)*(0.3 m/s)=0.015 N P2= (0.05 kg)*(-0.3 m/s)=-0.015 N

ptotal = (0.015 N) + (-0.015 N) = 0 N

b) Determine the magnitude and direction of the velocity of each marble and the total linear momentum after the head-on elastic collision (hint: you may use the Collision lab to model this event. The initial POSITIONS of the balls don’t matter as long as they are some distance apart).

V1 = _____-.3___ m/s, V2 = ____.3______ m/s,

p1 = ______-0.015 ____ kg m/s, p2 = _____0.015 _____ kg m/s,

ptotal = ____0______ kg m/s

Answer 1